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This is a guide to clearing up your cloudy pool. The three causes are poor filtration, low or zero chlorine and combined chlorine.
The filtration of the water is probably the key to crystal clear water. If your filter is old and not filtering properly the water may be cloudy. If it is damaged, the grids are ripped or your cartridge filter has bad cartridges then you will need to replace the filter elements. If the filter is not “filtering” the water, it will be cloudy. The filter is made to remove particles and bacteria and a byproduct of a filter that is not doing its job is cloudy water.
It is also important to run your filter long enough to cycle the water through at least once, twice or more is better. Most pools can filter the entire amount of water through after 4 hours depending on your filter size. So run time is also critical.
If the filter is dirty, it will cause cloudy water also. Clean or backwash the filter .
If your chlorine level is zeroed out, the water can be cloudy also. This is due to algae growth. Chlorine helps keep the water looking clear, so make sure the levels are raised up quickly. You can also run the pool for 24 hours after adding chlorine to help clear it up faster.
Total Chlorine is the last cause. It is when chlorine combines with nitrogen elements in the pool water, urine, sweat, body waste etc. You will notice an ammonia type smell also. There are test strips that will give you your Total chlorine level. Basically you want all your chlorine to be free/active chlorine and no combined chlorine. You can add an Oxidizer like Shocktrine to help get rid of the Chloramines that are causing the combined chlorine. Shocking your pool will also work.
So these are the main causes of your cloudy pool water. It is not safe to swim in cloudy water as you may get burning eyes, itchy skin and ill. Wait for it to clear up first.

For removing Yellow & Mustard Algae:
For GREEN pool clean-up:
Clean a Green Pool Updated Version -YELLOW OUT:
For Black Algae Treatment:
Swimtrine Plus Algaecide (Copper based):

How Much Chlorine do I Add to My Pool?:
Liquid Chlorine Pool Sanitizer:
Pool Shock, Cal Hypo:
Trichlor 3″ Chlorinating Tablets:
Dichlor Pool Sanitizer:

Pool Chemistry:
Pool Test Kit: Chlorine, PH and Acid Demand:
For chemicals to use in your pool see this video:
To calculate your pool volume (how many gallons):
To learn about Conditioner:
Shocktrine: Burning eyes and cloudy water:
For High Alkalinity, how to lower Alkalinity:
Soda Ash, PH UP:
Alkalinity UP, Baking Soda:
Muriatic Acid, pH Down:
Taylor Test Kit (K-1006 – K-2150):
Aquachek & HTH Test Strips:
Pool Filter Comparison, Filter Types:
How To Acid Wash A Cartridge Filter:

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