Intex Salt Water Swimming Pool 16x48..Shock & Green Algae

by Debbie Laffitte
(

Clear Up A Green Pool eBook
)


Can I really put shock in my saltwater pool to clear the green algae out of it? If so, do I just run the pool pump and not the saltwater pump? HELP!!!!


I have scrubbed the whole pool and vacuumed very very good. Keeping the filter cleaned out every two hours and it is still not clearing up any.




Thanks for your question Debbie

Yes, you can shock your saltwater pool with regular pool chlorine...just remember to turn off the chlorine generator/cell and only run the pool filter.

Salt Water Swimming Pools

You want to bring the chlorine up to a minimum of 10Xs. This is called "super-chlorination" or "break-point chlorination", but it's all the same thing...shock your pool.

Swimming Pool Shock

Get a Taylor Reagent FAS-DPD K-2006 pool water test kit. It's the best on the market.

Water Testing Kit

You can also go here to learn the best way to clear up your swimming pool algae and lots of good info. on the bottom of the page from other pool owners:

Remove Swimming Pool Algae

If you have a sand filter, it's best to backwash once per day. A sand filter needs a little bit of pressure to filter well. With cartridge filters, you can clean them twice per day while the green pool water is being cleared up.

Clearing up swimming pool algae does take time and patience, but it is something you can win.

Once the pool water has cleared, be sure to keep your chlorine level between 1.5ppm - 3.5ppm and the cyanuric acid (CYA) between 20ppm - 40ppm. The FAS-DPD pool water kit has instructions on how to test for both.

Good luck and have a great Summer

Robert

Comments for Intex Salt Water Swimming Pool 16x48..Shock & Green Algae

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Aug 29, 2016
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Summer waves 16x48
by: Amanda

Hi back again!I got someone to give me numbers on my pool.
Fac-0
Tac-0
Salt-2600
Ch-300
Cya-60
Ta-120
Ph-8.1
Acid-6
Copper-0
Iron-0
Pho-300
Temp-89

HE recommended dry acid I put 10 OZ OF that in. Then he told me to shock it with half the bag of the 1lb bag. I did all that yesterday evening. I tested my water this morning at home.
My chlorine is at about a 1.
Ph- 7.8 Ishmael
Alkalinity is about 170
Hardness test is 370
Cya I can see black dot on my tester at 30
My water is blue but cloudy now. So do I need to do anything yet or wait?




There's a process of clearing up a pool and it's for that reason I've written an extensive eBook about it. The short of your issue is you need to reduce the pH to 7.0 then use 1 gallon of chlorine AM and PM and maintain a high FC level of 15ppm. Sweep after each gallon is added and backwash once per day.

Robert

Aug 28, 2016
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Summer waves 16x48
by: Amanda

Hi I have a summer waves 16x48 pool. We have it hooked up to Intex salt water system and intex sand filter pump. We can't seem to get our pool to stay blue. Tight now it is a cloudy light green. We have had our system on boost cycle for 2 days now and it has to changed.

This happens alot. But usually we run the boost cycle and it gets better. I tested the water with the straps and showed chlorine in the ok range my alkalinity was high. So I took a sample to the pool store he didn't give me numbers they only do it for I ground pools. He did say my chlorine was really low almost none and phone was really high. He said I had high fertilizer in the pool also. I just don't know what to do!! I covered the pool today don't know if that will help. I am thinking we keep having issues mostly due to salt water system.

Could you help please? We are paying for a pool that we can't enjoy ever it seems. Also we live in Arizona just so you have idea of weather it that causes issues also.




Hi Amanda. I'm going to need a full set of chemical numbers: FC, pH, TA, CH, CYA, salinity level, and metals. A pool store employee told you that they only test water for inground pools? That is a sign of laziness, incompetence, or both. There's no different readings between an inground and above ground pool.

Just to give you hope, here's an above ground pool that I cleared up in 4 days for about $25:





Please remember that I also offer eBooks and phone consults that go into greater detail than a single comment can.

Clear Blue Pool eBook
How To Clear Up A Green Pool eBook
Resources
Personal Phone Consultation

Robert

Aug 07, 2016
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Summer Waves 16x48
by: Anonymous

We installed our pool about two months ago. It was not an easy start. Our salt water system said we had high salt or worked just fine at times. Our pool went green. Now I finally have it clear blue!!! So my question is we have a sand filter and salt water system. On a normal basis how long should I run them? I want to start setting the timers for both but do they know a good amount of time for them to run each night.




You'll want to run the filter 4 - 6 hours per day during the off season and 10 - 12 hours per day during the swimming season. It doesn't matter the time of day, just the amount of hours. If you're on a restricted time or "on-peak" hours during the day, then run it in the evening/night time hours.

As for how long to run the chlorine cell, it depends upon some factors such as sun, heat, usage, splash out and topping off, etc...

Each situation is unique, but a good start would be to have a slightly higher chlorine level, then dial it down to your needs.

Robert

Aug 06, 2016
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Cloudy Water Intex 20 Round Pool
by: Connie

I have a sand filter and a salt water system intex pool. I have cloudy water bluish color if i l let it will clear up (without pumps running) and i end up with debris that is hard to get out. My salt water system is brand new and i was wondering if i added the salt would it hurt or help my pool




Hi Connie. A full set of chemical numbers will help, FC, pH, TA, CH, metals, and CYA. if you have the right amount of salt in the pool, it won't make a difference if you add more. Salt helps produce chlorine for the pool. It's the chlorine that kills the algae and bacteria.

Clearing a pool is not a product you can buy. It's a process and method that you can easily duplicate, when you have the right info. I've written extensive eBooks on how to take care of and clear up pool. I also have personal 90 minute phone consults for those who want their answers quickly.

Clear Blue Pool eBook
How To Clear Up A Green Pool eBook
Resources
Personal Phone Consultation

Robert



Jun 15, 2016
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I am new to the intex salt water filter and now my water is green. Please help
by: Donna

I have read the other comments and right now I don't have any numbers. I got the saltwater filter because last summer when I added shock to the pool the water would turn brown. I worked hard to keep the water clear last summer. Everyone said to get a saltwater filter and I wouldn't have that problem. I am kinda scared to add shock this summer because I don't want to go through that again this summer. I am on a well system and that's why the shock turned the water brown.

The only thing I have added to the water is salt. I clean the pool everyday and still it turned green. I have a 15ft round pool. Is it going to be ok to add the shock to the water now that it is a saltwater pool or will it still change my water to brown?




Hi Donna. For metals, you need to have a good metal sequestrant. Jack's Magic has a good line, Pink, Purple, or Blue Stuff is good. You want the ingredient 1-Hydroxyethylidene-1, 1- diphosphonic Acid.

For the green water, I do need a full set of chemical numbers. Unfortunately there's no way around that. My eBooks go into great detail about this issue and how to clear up your pool. I have many resources available to you and encourage you to take advantage of them. It's well worth the investment and better than the alternative which is spending $500 trying to get your pool clear.

Clear Blue Pool eBook
How To Clear Up A Green Pool eBook
Resources
Personal Phone Consultation

Robert

Jul 29, 2015
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Yellowish-Brown on Bottom of Pool
by: Cathy

I have a salt water pool 24x52 that has developed a yellowish-brown sludge on the bottom of the pool. What is it and how do I get rid of it? What am I doing wrong?




Thanks for the question Cathy. First, I need your complete chemical readings, the actual numbers:

Chlorine, CYA (cyanuric acid/stabilizer), pH, Alkalinity, Calcium Hardness, and Metals (iron and copper) and names of any algaecides you may have used along with clarifiers, phosphate removers, and/or flocs. It makes troubleshooting much easier and the process of clearing up your pool will go much faster. Nasty water is a symptom of the problem, not the problem itself. I also need the kind of filter you have and if it's working properly. If it's not working it must be fixed in order to clear up the pool.

Get me that info. and we can go from there.

Robert

Jul 10, 2015
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Massive Rain, Green Salt Pool, Low Salt Readings
by: Sherry

Ok, new test kit...new readings

FC - 0
PH 8.4 +
TA - 80
TH - 200
CYA - 30-50

Do all of your previous instructions still apply and should we keep adding salt if the system is giving us a low salt reading and do you suggest using LIQUID chlorine when you mentioned adding chlorine in your instructions?




Instead of raising the pH you need to lower it to 7.0 - 7.2. FC works better at lower pH. Use muriatic acid. Start with 30 oz., sweep well, filter for 8 hours then retest. Once the pH is 7.0 - 7.2 you can start the shocking process using liquid chlorine.

Jul 09, 2015
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Massive Rain, Green Salt Pool, Low Salt Readings
by: Sherry

I checked my CYA Acid and it is at 20-40.




Now we can start. First is to get a Taylor K-2006 kit. It will give you the numbers you need, not a range strips give. Go to my YouTube channel and watch the detailed videos on how to use it. You need it to clear up the pool because you must get your FC at 12 - 13ppm to kill the algae. Strips won't give you the numbers.

You have a 10k pool, right? We'll start with the pH and TA. They need to come up a bit. Get your pH to 7.0 - 7.2 and your TA to 80ppm, or as close as you can. Start with 2 lbs. of baking soda around the perimeter of the pool. Filter for 8 hours then retest. Your CYA is fine so no need to adjust that. Next is to be absolutely sure your filter is perfectly working. Enough sand? Skimmer and pump basket cleaned out? Excellent suction and return? The entire filtration system needs to be working.

Once those are good you'll vacuum the bottom of the pool to remove any excess debris, then backwash. Now it's time for the chlorine. Use 1.5 gallons around the perimeter, sweep well and filter for 8 - 10 hours. Retest, backwash, and another 1.5 gallons of chlorine, same technique. One gallon of chlorine will increase the FC 10ppm per 10k gallons. You want to go a bit higher than that. The FC should start to hold after the 2nd round, so use 1 gallon this time, same technique as above. Filter for 8 hours, backwash and retest.

Shocking is a process, not an event. The trick is to get AND keep the chlorine above 12 - 13ppm for a period of time. You'll need to manually dose the pool with chlorine to keep it at 12 - 13ppm ppm. Make the adjustment at night, then retest in the morning. Be sure to have the pump running 24/7 and backwash once per day. You can go up to 15ppm, but no higher. Anything after that and you're wasting money and chemicals.

Shocking a pool isn't adding a bag of chlorine to a pool and expecting it to clear it up. Shocking a pool means to kill/eliminate the algae and organic matter. This is done by dosing the pool with enough chlorine to reach a high enough FC level and keeping it at this level to allow the chlorine to kill the algae and organics in the pool. You MUST stay on top of it and use liquid chlorine every 8 - 10 hours, at the maximum. If you can you should retest earlier and maintain the FC at 12 - 13ppm. Only when the algae is dead should you use a clarifier or floc.

If you feel your situation is more complex than this, I do phone and/or SKYPE consultations. It makes things go much faster and many people have found it extremely beneficial, saving them time and money in the long run. All your questions will be answered. I have nothing to sell you so you know I'm not bias. If you purchase a personal phone consult you'll get all 3 eBooks for free.

Pool Consultation

Clear Blue Pool eBook

How To Clear Up A Green Pool eBook

Swimming Pool Resources

Hope this helps and have a great Summer.

Robert

Jul 09, 2015
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Massive Rain, Green Salt Pool, Low Salt Readings
by: Sherry

Robert, here are the readings from my last post (added my name this time, same subject line)
I have only test strips at the moment
Free Chlorine - 0.75-1.0
PH - 6.2 or worse...worst color on the strip
Total Alk - 40

Also copper testing strip showed 0.1

Patiently awaiting instructions, thank you in advance




Thanks for the readings Sherry but I still need the CYA. With that much rain I'd bet the CYA decreased but we need to know the number. The other readings, FC, pH, and TA and very easy to take care of but it's the CYA that will be the determining factor on how to take care of your unique situation. Please keep in mind that with lots of rain any corrections that are made can get diluted out if you get another good rain. That's called occupational hazard for owning a pool.

Robert

Jul 09, 2015
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Massive Rain, Green Salt Pool, Low Salt Readings
by: Anonymous

We have the Intex Ultra Frame 12x24x52 pool (rectangle) and the sand pump/salt water system combo. June was the highest record pain in over 100 years for this county, 18 in.+. Pool is greean, have tried shocking it with powdered shock, used another blue liquid that makes the algae "glob" together as it dies, we've backwashed, we've cleaned...we just don't know what process in what order to do at this moment. Yes the rain is out of our control, but do dump 1/3 and refill? Everytime we shock now we are getting low salt reading from the system and we have added 3 40lb bags in the last two days, and shocked, and it's still green...this is the firs time in 8 years we have had this problem with salt (different system with our old 16x48 round, still the same company) Please help...at a loss of how to fix this!!




Thanks for the question. I live in FL and we got 9" of rain in 3 days last year so I know how frustrating this can be. I can tell you what's going on and how to handle your pool but first I need your complete chemical readings, the actual numbers:

Chlorine, CYA (cyanuric acid/stabilizer), pH, Alkalinity, Calcium Hardness, and Metals (iron and copper) and names of any algaecides you may have used along with clarifiers, phosphate removers, and/or flocs. It makes troubleshooting much easier and the process of clearing up your pool will go much faster. Green water is a symptom of the problem, not the problem itself. I also need the kind of filter you have and if it's working properly. If it's not working it must be fixed in order to clear up the pool.

You can get this done at your local pool store. Without these numbers I'm just guessing at what the problem is. Get back to me with the chemical numbers and I'm sure I can help.

Robert

Jun 10, 2015
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16x48 Coleman above ground pool
by: Anonymous

Shall I buy a tester or take some pool water to a local pool store?




Yes and yes. Get the Taylor K-2006 kit and go to my YouTube channel. I walk you through exactly how to take each test to get the most accurate readings. In the meantime, you can take a sample of water to your local pool store, then email back with the numbers.

Jun 09, 2015
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16x48 Coleman Above Ground Pool
by: Anonymous

Thank you Robert! I purchased it in early May and was unable to swim in it but once to to major thunderstorms we had for the month of May so I just started using it again and haven't been covering it up at night and heard that the sun will create algi w/o daily maintenance and no usage during the week so I know that's what the green is that is developing on the bottom and sides of pool so before it gets worst I wanted to shock it w/chlorine and purchased a small bottle of algi bloc for it as well.




It's great that you want to clear up the pool but the chemicals also need to be balanced. Shocking a pool is a process, not something you buy. It's not a product, it's maintaining the FC up to 12ppm and filtering until the water is clear. Due to the rain the CYA may have bottomed out and the pH may have risen to 8.2+ causing the FC to become less effective. It's very important to test the chemicals after a rain so you know which adjustments to make.

Robert

Jun 09, 2015
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16x48 Coleman above ground pool
by: Anonymous

How many pounds of chlorine do I out in my 16x48 Coleman above ground pool to clear up slightly green water.




Thanks for the question. Your pool went green for a reason and we need to find out why. It could be a bad filter, bad chemistry, or a combination of both. By shocking the pool with chlorine you may clear up the pool but without knowing all the readings it may go green again. I'd like to have your complete chemical readings, the actual numbers:

Chlorine, CYA (cyanuric acid/stabilizer), pH, Alkalinity, Calcium Hardness, and Metals (iron and copper) and names of any algaecides you may have used along with clarifiers, phosphate removers, and/or flocs. It makes troubleshooting much easier and the process of clearing up your pool will go much faster. Green water is a symptom of the problem, not the problem itself. I also need the kind of filter you have and if it's working properly. If it's not working it must be fixed in order to clear up the pool.

That being said, I'd encourage you to use liquid chlorine to super chlorinate your pool. You'll use 1 gallon per 10k gallons to accomplish that. Your pool is about 19k gallons so 2 gallons of chlorine will do the job. If you choose to use calcium hypo it's 2 lbs. per 20k gallons. Calcium hypo has a pH of 12 so your pH will increase, along with the hardness.

If you feel your situation is more complex than this, I do phone consultations. It makes things go much faster and many people have found it extremely beneficial, saving them time and money in the long run. All your questions will be answered. I have nothing to sell you so you know I'm not bias.

Pool Consultation

Swimming Pool Care eBook

How To Clear Up A Green Pool eBook

Hope this helps and have a great Summer.

Robert

Jun 08, 2015
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Green Water In Salt Water Pools
by: Anonymous

I found running the boost cycle helps to eliminate green water...remember tho, your boost cycle will run for 8X's the normal programmed cycle and you will need to have your pool pump running the whole time plus an extra hour...An example is I have my system set to run for 2 hours, this means the boost cycle will run for 16 hours so I have to have my pool pump running for 17 hours....it also helps if you check the filter every 6 hours and switch it out with a clean one. I spray my dirty filters out and reuse them.

Jun 08, 2015
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Green Salt Water Pool
by: Deana

I read all the other comments and they all seem the same problem as mine. Pool starts out blue then we put the salt water system on it turns green. The filter is gross. Do we run the salt water system longer or is it the problem?




Thanks for the question Deana

Salt pool are great when the chlorine cell is dialed in to your pool and unique situation. If your pool is green I'd like to have your complete chemical readings, the actual numbers:

Chlorine, CYA (cyanuric acid/stabilizer), pH, Alkalinity, Calcium Hardness, and Metals (iron and copper) and names of any algaecides you may have used along with clarifiers, phosphate removers, and/or flocs. It makes troubleshooting much easier and the process of clearing up your pool will go much faster. Green water is a symptom of the problem, not the problem itself. I also need the kind of filter you have and if it's working properly. If it's not working it must be fixed in order to clear up the pool. You cannot clear up and balance a green/cloudy pool with a non-working filter.

For your consideration, I have two eBooks that go into great detail about this very issue.

Clear Blue Pool eBook
Clear Up A Green Pool eBook



Robert

May 27, 2015
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Beginning Maintenance on 16x48 Intex Pool With Saltwater System
by: Michelle

Successful pool set up two days ago...filled pool, added owner's manual recommended amount of pool salt (125 pounds) and now running just the filter pump for 24 hours as instructed. At this point, I am terrified! I'm so worried that I'll make a mistake adding chemicals, taking readings, etc.! Next, I think I am supposed to throw in 1.3 pounds of stabilizer and run the chlorine generator for the allotted operational time before I test for levels of salt, chlorine, Ph, and copper. Please tell me if I am on the right track here. I would appreciate any exact directions you can give me. So, so scared that I'm going to make a mistake and ruin the pool!




Thanks for the question Michelle

There is no messing up when you have the right info. First is to get a Taylor K-2006 test kit. I've made several detailed YouTube videos on how to use it.

Next is to know your readings, the chlorine, pH, alkalinity, hardness, and CYA (stabilizer). Some salt pools don't have CYA due to the fact that the chlorine cell produces a constant stream of chlorine. Without knowing the size of your pool or the readings it's a bit more difficult to troubleshoot. Due to the scope of swimming pool care it would be time prohibitive to spell out everything.

You're on the right track and it's much easier than you think, however, this comment and "Contact Me" section is normally reserved for quick answers to common questions. I do have another avenue that may interest you. That is a personal consultation where i talk to you on the phone and answer all of your questions. I have no products or chemicals to sell you so you know what you're getting is the best out there. Guaranteed. And if you choose to go this route I'll give you my 2 eBooks for free. And I'll also give you a 25% discount of the regular consult price of $37.

Swimming Pool Consultation

Thanks and hope to hear from you soon.

Robert

Jan 18, 2015
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Cloudy Salt Water Pool
by: Kim

We have a new salt water pool. It has been crystal clear except for this past weekend it was full of people for two days.

When I test the levels they all are ok except it is extremly cloudly. I shocked it yesterday and still it is not back to being clear.




Thanks for the question Kim

I'd like to have your complete chemical readings. It makes troubleshooting much easier and the process of clearing up your pool will go much faster. You can get this done at your local pool store. Without these numbers I'm just guessing at what the problem is.

There could be a hundred reasons why the pool is cloudy. This is where the readings come in handy.

Cloudy Pool Water

If you could follow up with those numbers I'm sure I can help.

Robert

Sep 15, 2014
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Green Pool Water
by: Anonymous

I have a 20x48 intex..with a saltwater filter...water has turned green..i took a water sample to the pool store,and was told that saltwater concentration was off the chart..

I have drained out several gallons of water,and then refilled it saltwater reading still off the chart..what do i do next




Thanks for the question but I need a full list of chemical numbers/readings - Chlorine, CYA (cyanuric acid/stabilizer), pH, Alkalinity, Calcium Hardness, and Metals (iron and copper) and names of any algaecides you may have used along with clarifiers, phosphate removers, and/or flocs. It makes troubleshooting much easier.

I'm not sure what is meant by "off the charts". I understand the salt level is high but I need the numbers. The only way to reduce water salinity is a partial drain and refill.

What are you using to check the salinity? Test strips? Did you take another sample to your pool store for analysis? How much water did you drain the first time?

Robert

Aug 29, 2014
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Green Salt Water
by: Daisy

I have a 16X48 above ground pool that has been on a saltwater system for a couple years. Recently it has started to turn green with algae.

One time I put liquid algae cleaner in it and it cleared the green up but made it very cloudy. Ended up having to drain the pool and start over which is costly. Now 2 weeks later and it is green again! Will a package of shock (bought from walmart) clear up the green and make it clear again?

If so, do I shut the salt water pump off and only run the pool pump, and for how long?




Thanks for the question Daisy but I'm going to need alot more information. Chlorine, CYA (cyanuric acid/stabilizer), pH, Alkalinity, Calcium Hardness, and Metals (iron and copper) and names of any algaecides you may have used along with clarifiers, phosphate removers, and/or flocs. It makes troubleshooting much easier and the process of clearing up your pool will go much faster. I need the actual numbers, not test strip readings.

I'm also going to need your filter type and if you've checked the salinity. If so, what's the reading? And have you cleaned out the cell and is it working?

Robert

Aug 20, 2014
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Green Water
by: Joe Ann

We have a new saltwater system, everything has been great so far. then overnight my water is green.

I have been changing the filter running the filter longer to try and get the green out.

I thought with the salt there wouldn't be a lot of other chemicals to add, just salt. How do I clear it up?




Thanks for the question Joe Ann. I'm going to need your complete chemical readings, the actual numbers:

Chlorine, CYA (cyanuric acid/stabilizer), pH, Alkalinity, Calcium Hardness, and Metals (iron and copper) and names of any algaecides you may have used along with clarifiers, phosphate removers, and/or flocs. It makes troubleshooting much easier and the process.

Once I get the numbers I can go from there. There's no way to tell how to clear up the pool unless we have the numbers.

Jun 14, 2012
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Shock Pool
by: Lauren

I don't know anything about the chemical lingo, but my pool smells like fish and is slowly turning Green. Help!!!!

I washed out the filter and have swepted the bottom but it's still green.

What can I put in my pool and how much. It is a 15x15 above ground pool. 41/2 feet deep.

My girls are dying to swim!




Thanks for the question Lauren

Pools turn green for different reasons. A cloudy pea soup green is a sign of lack of chlorine. This could be caused by poor weekly maintenance, or too high or too low stabilizer. It's difficult to say right now.

I'd like to have your complete chemical readings:

Chlorine, CYA (cyanuric acid/stabilizer), pH, Alkalinity, Calcium Hardness, and Metals (iron and copper). It makes troubleshooting much easier and the process of clearing up your pool will go much faster.

You can get this done at your local pool store. Without these numbers I'm just guessing at what the problem is. Get back to me with the chemical numbers and I'm sure I can help.

Robert

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