Cloudy Pool Water

Understand Cloudy Pool Water & Swimming Pool Water Maintenance. How To Get Rid Of A Cloudy Swimming Pool W/Out A Pool Clarifier.

I Had $5 In My Pocket & Did This

It's not by accident that you're here wondering why you have cloudy swimming pool water. 


Why use a coagulant, phosphate remover, and tons of algaecides? 

A cloudy pool, next to green pool water, is the biggest complaint among pool owners.

Sometimes you'll seem to have milky pool water overnight.  What can you do about it to get back your crystal clear and clean pool water?

Cloudy pool water should never slow you down. You've seen my videos. Now get the BEST information on the internet on how to clear up your pool. Click on the eBooks below to get your pool back. 

Cloudy Pool Water

Where Does Cloudy Pool Water Come From?

There could be many reasons for cloudy pool water, so check out this list and see if any apply to your swimming pool.

  • Bad or inconsistent chlorination with pool chlorine or weak hypochlorous acid

This might be the main reason which can cause a whole host of problems.

  • Excess dead or dying swimming pool algae
  • Pool pump and filters are not running long enough

It's 6 - 8 hours in the Winter and 10 - 12 hours in the Summer.

  • Too much sodium bicarbonate and/or calcium chloride

The can produce hard water scale.  Time to check the water hardness testing with a quality pool water test kit.

  • Wrong/bad level of cyanuric acid (pool stabilizer/conditioner), or Dichlor

CYA is 30 - 50ppm.

  • Using or over-use of calcium hypochlorite (for chlorination)
  • Pool chlorine tablets/smart sticks old or ineffective
  • Use and/or over-use of flocculation (flocculate) in swimming pool water
  • Pool pH too high. The range is 7.4 - 7.8
  • Inground pool covers left on for too long
  • Pool ionizer or pool ozonator not functioning properly
  • Clogged or improperly working pool filter system
  • Bad swimming pool shock (using too much or not enough)
  • Cracked or leaking pipes from skimmer or pump causing bubbles in the pool
  • Bather load too high for a period of time or too many people at once
  • Use and/or over-use of Baquacil, Proteam Supreme, Softswim, or Bioguard pool chemicals
  • Bad/wrong pool water chemistry.  Poor weekly pool maintenance.
  • Wrong or old pool acid
  • The DE pool filter is cracked, not cleaning correctly, or is leaking DE back into the pool
  • Sand in sand filter too old, has low sand, not backwashed fully or correctly, or sand has "channeled" down the side of the filter housing
  • Poorly functioning pool water filters
  • Wrong chemicals for salt water pool systems/saltwater pools, bad or inconsistent salt water pool maintenance
  • Bad, shorted out, or calcified chlorine generator pool/salt cells
  • Multi-Port Valve damaged, is cracked, damaged gasket, or plumbing is wrong
  • Pump worn out or impeller broken or blocked
  • Pipes are clogged up with a foreign object or gummed up through chemical use
  • Refinished pool plaster
  • Over-brushing of new pool plaster
  • Dust, pollen, or mud
  • Use and/or over-use of phosphate remover such as "Phosfree"
  • Over and/or use of wrong pool algaecide

Only use PolyQuat 60.

  • Supersaturation of chemicals not in line with the Langelier index
  • Bad or wrong swimming pool winterization/pool closing
  • Onset of pool algae and/or green pool water

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As you can see from this list, there are many reasons why you can have cloudy swimming pool water.  

Myths About "Pool Water Cloudy"

These are a few things I have learned that won't cause swimming pool cloudy water.

Too much pool chlorine

This is good at killing algae and taking care of green pool water. It will make swimming uncomfortable causing possible swimming pool rash and/or chlorine rash. Only Calcium Hypochlorite will cloud your pool, especially when you do a pool shock and will be an expensive lesson in weekly pool maintenance and will increase your pool maintenance cost.

Low calcium hardness and low pool alkalinity

and

Low cyanuric acid level (CYA), below 20 ppm

This will lead to lower and less effective chlorine levels and a high chlorine demand causing problems such as a green algae swimming pool, white water mold, yellow algae, blue-green algae, etc...

Normally, the main reason for cloudy swimming pool cloudy water is swimming pool algae growth.  Knowing this, you'll need to shock the pool to kill the pool algae.  

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Swimming Pool Care Instructions

Some self-proclaimed "pool guys" on the internet and YouTube will tell you to simply add some clarifier, flocculant, and phosphate remover. Or worse, to use those products in tandem with test strips.

A real pool guy will tell you to NEVER use test strips. Sure they're safe, easy, affordable and convenient. But, they are not as accurate as a good Taylor test kit. And that's what we want - accuracy.  

You MUST know you chemical readings (the actual numbers) and find out the reason why the pool went cloudy to begin with.

First off, be sure to get your readings in line. Use a good FAS-DPD K-2006 Taylor Test Kit.

  • Be sure your filter is perfectly working. No holes in the DE grids, sand is goo or your cartridge filter has less than 2000 filter hours. 
  • Scoop out as much debris as you can and vacuum
  • Shock the pool with liquid chlorine
  • Run the filter 24/7 until you have clear pool water

A partial water change might be in order for cloudy pool water, but allow this to work first before going that route. Remember when dealing with swimming pool care, patience is needed.

Don't worry if you have cloudy pool water. Even the best pool owners with a good understanding of basic pool care and using the best pool tips will slip up every now and then.

Things may happen, but don't worry about your "swimming pool cloudy" issue. You have the swimming pool maintenance tips to take control of the problem properly.

So go clear up your cloudy pool water and safe swimming to you and your family.

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What Other Visitors Have Said

Click below to see contributions from other visitors to this page...

High Cynaric Acid 
My pool is a 26,000 gallon above ground vinyl liner. around 7/31/2014 the cya raised to 113 and then my water started clouding up. 8/5/2014 stopped …

CLOUDY POOL, I Have Tried Everything 
Our pool looked great the day we took the cover off. This is actually the first time we've had an unsolved problem! After we open our pool we drop in POOL …

Cloudy Pool 
chlorine-1.3, ph-7.5 alkalinity-105 hardness/calcium-450 stabilizer-20 salt-3360 The pool store did these readings Saturday morning, May 31. …

Why Do I Have Cloudy Pool 
I have a small pool, probably 10-12000 gallons with some kind of coating on it. I think its fiberglass. It was completely full of algae and the bottom …

Milky Pool Water 
Last week my pool was clear but the readings were FC 0, Ph 7.2,CH 332,TA 17, CYA 0. I have an inground 20x40 vinyl liner pool. Per store recs, I added …

Cloudy Pool Won't Clear 
I opened the pool three weeks ago (mid May)after a much warmer than usual winter. It was full of algae so I shocked it heavily until the green color changed …

High Phosphates Over 1000 & Cloudy Water 
I have never had this phosphate issue in 14 years and now all of a sudden I have them, and it's at 1,000. After putting in 3 bottles of remover, I can't …

CLOUDY WATER & Chlorine Level Is Still Too High After Shock Treatment 
We had a bad green algae problem (our pool is an above ground) 16'round 48" depth and I believe it is a little over 5,000 gallons. It is less than 7,000 …

White Cloudy Pool For Over A Week 
I've had white, cloudy water for just over a week. This has never happened in 10 years of maintaining this pool. I shocked Thursday and added 32 ounces …

Cloudy Pool Water With Algae And Phosphates 
Our winter cover broke this year and our water was greeny/brown. I used the usual opening kit and the water went cloudy. It has been cloudy ever since …

I Can't Seem To Get The Cloudiness Out Of My Pool. Both The pH And Chlorine Are High. How Do I Lower Them? 
I have shocked it twice now with powder chlorination. Now the chlorine level is high. The pH level was high from the start... HELP? Thanks …

Heavy Rains Flood & Now My Pool Is Filled With Mud 
I have a 20'x40' inground pool that was filled and up and running. With the recent heavy rains it is now filled with mud. Besides draining it, what …

Pool Water Constantly Cloudy & How Long Does It Take To Clear 
I have a sand filter and an in -ground swimming pool. The pool is constantly cloudy. I use a clarifier and the dirt forms a sediment at the bottom. …

Turned Swimming Pool Filter On..Brown Water Problem.. 
Accidentally left filter off for 3 days after adding chlorine pucks. Tested pool and no chlorine, realized filter was off. Turned it back on and …

MY POOL ISN'T WORKING PROPERLY..CLOUDY/GREEN WATER 
My grandmother and uncle got a rental that has a personal pool, but ever since they moved in, they could not get it to work. We have shocked it, the blue …

Cloudy Pool Water..Salt Water Swimming Pool..How Much Salt To Add?.. 
We have a 12 x 39in above ground swimming pool. It is salt water pool. We have a salt water pump and a regular pool pump to circulate the water. …

Cloudy Pool Water & Algaecide..Need Help 
I live in CT and just opened my 23k gallon in ground pool 2 days ago. I added 2 gallons of liquid shock and then a quart of algaecide. Tried strips …

Extremely Cloudy Water Not rated yet
Love your U tube videos! We have a new 25000 gal in ground pool. At the start of the season, the water was pristene! After a swimming day with the grandkids, …

Cloudy Green Pool & Nothing Is Happening Not rated yet
Unfortunately, due to work I couldn't spray out the filters every 12 hours but have done it each night. The chemical levels are good and now I'm on the …

High CYA  Not rated yet
I just got back Lelie's with water analysis. I have a 10000 gallon pool, all tests normal except CYA acid was at 200. Been having problems with really …

Problem With Pool After Adding HTH Liquid Clarifier Not rated yet
Thanks for the second ebook. I watched your clearing a cloudy pool video and hoped your ebook might help me. I didn't see a fix there but maybe you can …

Cloudy Clear Inground Pool That Doesn't Seem To Be Clearing Up Not rated yet
Hi there, I've watched your videos on how to clear a cloudy pool, I've shocked my pool, added chlorine, put algaecide in at opening and clarifier twice …

Clear Up Cloudy Pool Water Not rated yet
I found you on youtube and think that your information is awesome. I am a new pool owner (2nd year) and absolutely know nothing about it. We had it maintained …

Newly Opened Pool Turned Cloudy Not rated yet
Some background. 18,000ga gunite pool with a sand filter with brand new (300#) sand and rebuilt pump. We bought the home in January with no pool history, …

Cloudy Water Keeps Returning Not rated yet
Our TDS were high last year, so we drained the pool about half & they still seemed to be a little on the high side. We are going to drain again this week, …

Pool Water Looks Milky & Minerals in Water Not rated yet
I recently opened my pool. The water was sparkly and looked clean. I went on holiday for a week and when I got back my pool looked dirty. I shocked …

Cloudy Water In Above Ground Pool Not rated yet
We recently purchased a 20' x 4' round above ground pool. After filling it, we tried to get the water clear but it only got cloudy. So, we went to a local …

Cloudy Pool After Sodium Bicarb & Foam W/ Cartridge Filter Not rated yet
Pool was a little cloudy, but I could see the bottom. I followed the suggestion to add Sodium bicarbonate as calcium level was high--at the top of …

Why Did New Pool Water Turn Yellowish Green? Not rated yet
After filling the pool, my children put chlorine tablets in a floater and tossed it into the pool. Within 12 hours the fresh water had turned to a …

White Sediment On Pool Bottom & Aquazone Floc Not rated yet
Pool is in Virgin Islands. Pool has been clear and stable. My wife shocked the pool 3 weeks ago before returning to States. When I arrived, pool …

Why Has My Pool Water Got Cloudy Now? Not rated yet
I have used trichlor tablet feeder for my pool for long time but now I just stopped. When I used test strip to test, the stabilizer was very high …

Pool Algaecide Clear Emerald Green Water and Clarifier Not rated yet
I messed up....I tried to go the cheap route...I am ready to close my pool. I added the shock and had my levels good and decided to add algaecide as a …

Cloudy Pool From Dirt & Slightly Milky Pool Water Not rated yet
When I hoover my pool there is a small amount of dirty water that comes back out of the jets at the end of the pool which makes the water a bit cloudy. …

Water Strong Odor, Milky Water and Cloudy Not rated yet
Pool liner is old and appears that the vinyl is sheding a milky color. Filtering and floculent agents don't seem to help. My pool is well banced and …

What Would Make Cloudy Pool Water Not rated yet
My pool water is cloudy and has been tested by employees at Leslie's pool three times and they have put me through the grind. Twice they say the water …

swimming pool care, basic pool care, above ground pool maintenance, inground, salt water

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