Cloudy Pool Water Support - READ FIRST

Causes and cures for cloudy swimming pool water.
Milky pool water, white, pink, brown, purple, black cloudy water.
chem geek
Pool Industry Leader
Pool Industry Leader
Posts: 2381
Joined: Thu 21 Jun, 2007 21:27
Location: San Rafael, California

Cloudy Pool Water Support - READ FIRST

Postby chem geek » Thu 13 Feb, 2014 01:41



RubyKBlack
I'm new here
I'm new here
Posts: 1
Joined: Tue 27 Sep, 2016 23:36
My Pool: My pool is a big one and has a pump and filter

Re: Cloudy Pool Water Support - READ FIRST

Postby RubyKBlack » Tue 27 Sep, 2016 23:37

Thanks for sharing
mistlin
I'm new here
I'm new here
Posts: 4
Joined: Tue 02 May, 2017 22:22
My Pool: Size : 15 x 30
Type : Inground
Filter : Sand
Pump : Pentair WhisperFlo 1.5 HP

Re: Cloudy Pool Water Support - READ FIRST

Postby mistlin » Wed 03 May, 2017 03:36

The water usually becomes cloudy when the amount of pool chemicals in the water is imbalanced. This could be due to high alkalinity, high or low chlorine level. When the chemical balance is not right. Unwanted particles start accumulating in the water. Cloudy water can also be due to filter issues. I had this problem and then it got fixed after I called in inground pool builders(http://www.soldapools.com/areas-serviced/swimming-pool-builders-contractors-toronto/) to look it up and fix the issue which they did. Cloudy water can come if the filter system is faulty or if you are not running your filter as per the required 8 to 10 hours daily. A filter constantly cleans the pool water. So if you do not use it properly the water would stagnant and thus make the water cloudy. Always check your pool after you shock it.

You can get rid of the cloudy water by using pool clarifier. Using it once every week is important. The pool clarifiers collect the tiny particles that are causing the pool water to become cloudy and binds them together to form larger particles so that the filter can easily pick them up. Since tiny particles are difficult to get collected by the filter the pool clarifier would clot them together so that the pool filter would find it easy to trap them. Vacuuming the pool is also another thing that you could do. When vacuuming make sure that the filter is set on the backwash option. If you are using a cartridge filter remember to remove the drain plug. You could vacuum all the cloudy water out of your pool. This is important because if you pass a lot of dirty water through the filter it may not function properly. And the dirty water will flow back into the pool. By vacuuming out the dirt it would not go through the filter system. Vacuuming the pool would result in the loss of so much water so make sure that there is fresh water getting into your pool during the vacuuming process. Despite the loss of huge amount of water, if done properly your pool will clear up within a day.
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 1595
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Cloudy Pool Water Support - READ FIRST

Postby Denniswiseman » Wed 03 May, 2017 06:26

mistlin wrote:The water usually becomes cloudy when the amount of pool chemicals in the water is imbalanced. This could be due to high alkalinity, high or low chlorine level. When the chemical balance is not right. Unwanted particles start accumulating in the water. Cloudy water can also be due to filter issues. I had this problem and then it got fixed after I called in inground pool builders(http://www.soldapools.com/areas-serviced/swimming-pool-builders-contractors-toronto/) to look it up and fix the issue which they did. Cloudy water can come if the filter system is faulty or if you are not running your filter as per the required 8 to 10 hours daily. A filter constantly cleans the pool water. So if you do not use it properly the water would stagnant and thus make the water cloudy. Always check your pool after you shock it.

You can get rid of the cloudy water by using pool clarifier. Using it once every week is important. The pool clarifiers collect the tiny particles that are causing the pool water to become cloudy and binds them together to form larger particles so that the filter can easily pick them up. Since tiny particles are difficult to get collected by the filter the pool clarifier would clot them together so that the pool filter would find it easy to trap them. Vacuuming the pool is also another thing that you could do. When vacuuming make sure that the filter is set on the backwash option. If you are using a cartridge filter remember to remove the drain plug. You could vacuum all the cloudy water out of your pool. This is important because if you pass a lot of dirty water through the filter it may not function properly. And the dirty water will flow back into the pool. By vacuuming out the dirt it would not go through the filter system. Vacuuming the pool would result in the loss of so much water so make sure that there is fresh water getting into your pool during the vacuuming process. Despite the loss of huge amount of water, if done properly your pool will clear up within a day.

There are a few errors in this post
1.Cloudy water is generally an indication of algae and you need to Slam. Check this first
2.There is no need to run your filter 8 to 10 hours daily, it's a myth whatever mixes your chems and cleans is sufficient
3.When vacuuming the filter should not be set to backwash as it will send the water round the wrong way. Set to waste and it bypasses the filter
4.If you pass dirty water through the filter it makes it more efficient and doesn't just pass straight through. Backwash your filter when it's 20% to 25% higher than your clean filter pressure
5.Vacuuming through the filter which is desireable to clean your pool will not reult in any water loss, only backwashing and vacuuming to waste will lose water
Aaronges
I'm new here
I'm new here
Posts: 3
Joined: Mon 04 Sep, 2017 15:39
Location: Bulgaria

Cloudy Pool Water Support READ FIRST

Postby Aaronges » Fri 15 Sep, 2017 07:51

Hello. The pool on our sitesi has some algae growing round the edges. As the edges are not smooth the manager says he will have to empty pool to clean. I said he could increase chemicals but he says no.
Has anybody else had to empty pool at peak season?
Thanks in advance,Derek.
I recommend using trading robot for profitable business
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 1595
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Cloudy Pool Water Support - READ FIRST

Postby Denniswiseman » Fri 15 Sep, 2017 13:38

You can do what we call a Slam (Shock Level And Maintain) with relation to your Chlorine / CYA Chart
You can swim up to shock level for your CYA with no problems
You really need to be using liquid chlorine
Can you supply a complete set of numbers
FC:
TC:
pH:
TA:
CH:
CYA:
MurphyMan
I'm new here
I'm new here
Posts: 2
Joined: Thu 21 May, 2020 16:49
My Pool: inground pool; 18,000 gallons: DE filter.

Re: Cloudy Pool Water Support - READ FIRST

Postby MurphyMan » Thu 21 May, 2020 18:34

Have had a pool for 24 years. This year I'm having a problem I've never had before, and I think I'm guilty of blindly following the advice of my pool store.

I have an 18,000 gallon pool, vinyl liner, DE filter, and I use chlorine shock. After opening the pool 8 days ago, the numbers were as follows:

FC: 0
TC: 2.1
pH: 7.3
TA: 65
CH: 225
CYA: 0

After adding alkalinity and shocking, the free chlorine was still zero, and the pool remained very cloudy. Thus, the pool store advised FLOC, but after using and waiting 48 hours, the cloudiness remained and the surface of the water had whitish scum on it. Nothing could be seen on the floor of the pool due to the cloudiness. Next, the pool store advised using clarifier, which has resulted in the pool being a little less cloudy. After using clarifier 2 times, and after vacuuming 2 times and backwashing 2 times, I can only run the pump a couple of hours before it becomes clogged. The numbers now are as follows:

FC: 0
TC: 0.8
pH: 7.8
TA: 115
CH: 275
CYA: 15

Should I continue to backwash and vacuum? What chemicals do you recommend? Thanks in advance for your help!
Denniswiseman
Pool Industry Leader
Pool Industry Leader
Posts: 1595
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: Cloudy Pool Water Support - READ FIRST

Postby Denniswiseman » Fri 22 May, 2020 02:11

Looking at your first set of numbers you had combined chlorine (the used up part of chlorine) and you should have Slam (Shock Level and Maintain) with relation to Chlorine / CYA Chart and Recommended Pool Levels
The FLOC should have been vacuumed to waste because it clogs the filter
Continue the SLAM process, don't blindly follow pool store advice
Are your numbers from a pool store or your own. You really need to get yourself a decent FAS/DPD test kit (Taylor K2006c or TF Testkits TF100 in the states) to get accurate results as maintaining an appropiate shock level means testing quite often during the day
Use these common products to balance your pool
Liquid chlorine (sodium hypochlorite or plain bleach)
Muriatic acid (hydrochloric acid) to lower pH and TA
Bicarbonate of soda to raise TA
Aeration will raise pH only
Soda ash will raise pH and TA
Excessive CYA renders your chlorine ineffective and you have to use more to get the same sanitation
For every 10 ppm Free Chlorine (FC) added by Trichlor, it also increases Cyanuric Acid (CYA) by 6 ppm.
For every 10 ppm FC added by Dichlor, it also increases CYA by 9 ppm.
For every 10 ppm FC added by Cal-Hypo, it also increases Calcium Hardness (CH) by at least 7 ppm
You can still use Trichlor and Dichlor to raise your CYA or when you are away
MurphyMan
I'm new here
I'm new here
Posts: 2
Joined: Thu 21 May, 2020 16:49
My Pool: inground pool; 18,000 gallons: DE filter.

Re: Cloudy Pool Water Support - READ FIRST

Postby MurphyMan » Fri 22 May, 2020 12:56

Thanks!

Return to “Cloudy Pool Water”

Who is online at the Pool Help Forum

Users browsing this forum: CommonCrawl [Bot] and 2 guests