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Aug 11, 2011
getting the green out of my pool
by: Michelle

Hi Robert,
Okay, last eve I added the dichlor to shock.
Two hours later the 20 oz acid. Then in the morning I added the liquid chlorine. I did the pool and filter care every chance I could. There was more grey stuff to wash out rather than the green color it had been.

I just retested the water.

CL 5 (or higher, test kit only goes to 5)
BR 10
PH 7.5

The water color is now a light sea foam or turquoise color milky still. The color reminds me of a Lovebird I had years ago and she was the called a sea foam due to the coloring.

It's looking "cleaner" to me.
What do you suggest I add tonight.

Thank you very much and have a good night.

Comment By Robert

Green is bad, milky white is good. It means the chlorine is killing the algae. Shock again with liquid chlorine and be sure you're not skimping on it. 1.5 gallons should get the level over 10 - 12ppm. About 2 hours after shocking, put another 20oz. of acid in. Get the pH down to 7.2ppm the best you can.

Unfortunately with your test kit it's hard to see what the level is exactly in the evening and compare that with the morning test to see how well the chlorine is holding. If it only drops between 1 - 2ppm during the night and the water is white then normally all of the algae is dead. The filter needs to do the job of getting all of the dead algae out.

Do the above and keep me posted.


Aug 12, 2011
Great Advice
by: CoreyC

Great advice, Robert. I would accentuate the advice on having clean filters because I see that as a major culprit quite often.

It usually takes a bit of work to get the pool water just right but once you get it properly it's fairly simple to maintain.

Aug 12, 2011
getting the green out of my pool
by: Michelle

Ok, I added the chlorine and then the acid last night. I also had done extra pool and filter maintenance.

I was able to test the water this morning again with the hth kit on the chlorine, it has been really yellow in the test and my tube only goes tho 5, however this morning the test tube turned really really orange, so I know the chlorine is up higher than it has been.

cl 5+
br 10+
ph 7.5

The ph looks between the 7.2 and the 7.5 now, it is not quite 7.5 color, getting lighter.

The pool water is milky blue for sure now. I just tested the water again this evening and it is the same. The chlorine test is still coming out really orange and pH looks the same.

I am leaving for the weekend and will be back Monday. Any suggestions on the best thing to do tonight that might hold until Monday afternoon.

Oh, my son asked me how come I don't use ph decreased he has seen it at the hardware store? I told him I would ask you.

It looks so much better and I thank you for your help.

Have a great weekend.

Comment By Robert

That sounds great Michelle. Shocked and it's very orange... That means the chlorine is holding longer, which means it's killing the algae.

I would shock once more and clean the filters as best you can, as late as you can, then when you get back, test and clean the filters as early as you can.

If your chlorine test tonight is really orange, just use 1 gallon. If it has any yellow, use another 1.5 gallons.

All of those pH/alkalinity increaser and decreaser products are just overpriced. You can get things to balance your pool in the laundry isle of your local grocery store. For a pH/alkalinity decreaser all you need is muriatic acid.

20 Mule Team Borax will raise the pH and baking soda will raise both the alkalinity and pH. It just depends on how to apply it.

Do You Really Need All These Chemicals For A Pool Or Are They Just Trying To Get Your Money?

Have a good weekend.


Aug 18, 2011
Just wondering.....
by: Kathy

I admire your stamina. How much money have you spent?? I'm fighting the same battle. Everyone keeps telling me to turn it into a salt water pool.

Wouldn't it just be cheaper to drain the pool, scrub it down and start over???

Just wondering....

Aug 19, 2011
getting the green out of my pool
by: Michelle

Actually I tried going salt last year, was a nightmare, went back to chlorine, my pool is starting to look swimmable. I got behind on the chlorine I think and got soupy green, now it is a cloudy blue.
Going to pool store in the morning, have them run a test and hopefully soon I will have a clear pool.

Aug 20, 2011
getting the green out of my pool
by: Michelle

I went to the pool store yesterday. It is a Leslie's Pool Supply store about an hour away. We got held up in the canyon about 15 extra minutes and I was worried about my water sample being over an hour old.
The store was crowded and only one sales guy there. About 30 minutes waiting and finally he tested my water and says my pool is fine.
He says "what is your issue?"
I told him "cloudy like milky blue and I had an algae problem and had super chlorinated it and it has went from green to blue, etc."

His test kit only goes to 5. He did not offer numbers I had to prompt him. Like "what was my chlorine?" and he says "at least 5".

I am not sure if he was being "right on" with me, he did the test quickly, poured out my water and the test kit as fast as he could and says"your pool is fine".

CL 5 +
PH 7.6
TA 100
CYA 30

It was supposed to be some 9 point test, Hmmm.

I told him I wanted some Muriatic Acid and he says I did not need it. I thought he was being rather "short" with me and as I questioned the test results and told him I had gotten 400 on my hth test kit for the TA. Asked me how old my kit was, I said brand new and had called hth about my results on the TA.

Oh, I did not see the test kit you recommend there.

So...we went to Home Depot and I bought more Chlorine and Muriatic Acid from them.

I think I have spent almost $180, on my pool this summer, that included the brush, skimmer, algaecide, liquid chlorine and tabs, acid, test kit.

Today I found another pool store in the phone book and next time I go to town, I will go there. I don't think I would go to Leslies again.

I will add more acid this evening, take the test again in the morning. I have been sweeping and cleaning filter a lot and am pleased with the progress of my pool water.

Jan 22, 2015
Getting The Green Out Of My Pool
by: Michelle

I have a vinyl pool, it is a 15' x 48" round
I don't have a pool store near, probably could take a test over next week.

My TA on the hth test kit that I have at this time, is that the Alkalinity test? It took 33 drops to go from green to red which x 10 is 330, so isn't that high?

Last evening, I put in the Muriatic acid as directed, then the liquid chlorine. I do have a dual tab floating. It still looks mucky this morning after all night. I brushed and skimmed. At work now. I can retest soon, then brush and vacuum. I will order the test kit you recommend soon.

Yes having a TA 330 is a bit high.Before adjusting that you should retest or have a pool store or someone else test to confirm. The DPD K-2006 kit is easy and will tell you exactly what each reading is.

Be sure to keep filtering 24/7 and keep the chlorine level above 12ppm morning and night, or as best you can. Remember to use a bucket filled 1/2 with water and chlorine, then broadcast it around the perimeter. Sweep after each application.

Don't add the chlorine directly into the pool. It's heavier than water and will sink to the bottom and may cause staining on the liner.


Comment By Michelle
Date: August 9, 2011

I just retested with the hth kit that I have.

ch 1
br 2
ph 7.8

TA 40 gtts x 10 = 400 ppm
** It took 40 drops to get from green to red, directions
say to multiply # of drops by 10.

CYA is under 30
** tube only goes up to 30 and black dot
was still visible starting to get cloudy, like grey. Water is milky green.

Comment By Robert
Date: August 9, 2011

Good. The pH came down a bit. Once more, add the same amount of acid you did. The pH should come down to 7.2 - 7.4ppm. Keep filtering.

The CYA is a bit low so you'll want to shock once with Dichlor chlorine, then retest in the morning or after 8 hours. This is a stabilized chlorine that will get the CYA in the pool. When you get the CYA between 30 - 50ppm, stop and go back to liquid chlorine. If you can't get the Dichlor now, use liquid chlorine until you can.

Be careful when using Dichlor as it can get out of hand quickly. For every 10ppm of chlorine added with Dichlor, you'll raise the CYA by 9ppm. For your size pool, 1lb. of Dichlor should do it.

Keep shocking with liquid chlorine above 12ppm (after you get the CYA between 30 - 50) as often as you can, but at miminum morning and evening. Remember to use a bucket with water and sweep after chlorination. And keep the cartirdges clean.

It may take a few days for the pool to turn white/gray so be patient, keep the chlorine level up and clean the filters.


Comment By Michelle
Date: August 10, 2011

Yesterday early evening I put in the same about of acid as the first time. Abut 2 hours later I put in the Dichlor. Did my pool care.

I was not able to test in the morning. I just tested this evening and the reading I get on my hth test kit again are:

cl 5
br 10
ph 7.8
ta 400
cya 30
hardness 830

The water looks a bit better like a milky grey to it. My chlorine test tube only goes up to 5 so I am not able to tell how high the chlorine actually is. The pH is not moving. I used about 14 oz. of mariatic magic acid the first time and the second time.

What do you think I should add? I have liquid chlorine and I have another pkg Dichlor and still have the muriatic acid too. I will be able to get to a pool store and get the test kit you suggested next week.

Thank you!

Comment By Robert
Date: August 10, 2011

It's fine if the test kit you have only goes up to 5. It sounds like the algae is finally starting to die out. Milky grey is good. If the CYA is only 30 you could probably get away with adding another 1 lb. pack, but that's it.

After that only use liquid. It should only raise the CYA another 10ppm or so. You can go up to 50ppm and be fine. The range is between 30 - 50ppm and the chlorine level between 1.5 - 3.5ppm. The is for normal maintenance.

Keep shocking the pool, morning and night. Maybe tonight shock with Dichlor and the morning shock with liquid chlorine. Another 1.5 gallons.

After 2 hours put 20 oz. of acid in the pool to reduce the pH and keep filtering. Remember to clean out the cartridges. All of the dead algae will clog it up quickly.

Magic Acid is Hydrochloric Acid, but I'm unsure as to the strength compared to normal muriatic acid. You're going to need a bit more acid because after this you'll work on the alkalinity. You'll use acid, but the adjustment will be different.

The pH might not be moving because the alkalinity is so high. At least the pH is below 8.0ppm which is good. Best would be 7.2ppm but this is what you have to work with right now.

Shock tonight, 2 hours later more acid around the perimeter of the pool, and shock and in the morning.

Keep me posted.

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