Test the ph levels.
Clean green swimming pool water.
Other than that you can shock the pool to clean it.
Method shock level and maintain.
To get rid of green water from a pool start by using a chemical test kit to test the chlorine and ph levels.
If your pool is very dirty it may need many gallons of liquid chlorine shock over a period of days before the water clears.
After shocking the pool filtration becomes a key factor in clearing up a pool.
If the pool has been shocked and is no longer green but turns green again after a day or two check the water chemistry and pay particular attention to phosphates in the water.
The experts at trouble free pool coined the s l a m.
Green water or any color other than pristine clear is a dangerous situation waiting to happen.
The only way to clean a green pool fast is to kill the algae that have bloomed in the water.
Clean the filter often during this process.
Then add sodium bicarbonate to increase the ph or sodium bisulfate to decrease it.
You can test the sanitizer level too but facing facts we already know that s too low which is why you have green water in the first place.
Next clear any floating debris and scrub the sides and bottom of the pool with a pool brush.
You can however try to clear the green pool water first before choosing the nuclear option.
The green water is probably algae which is unhealthy.
Continue this process until you notice the water changing color to either cloudy white light green or clear.
You can check your filters here too and clean them up for the next step if you wish.
Start off by adding 3 or 4 gallons and if you see no results overnight add 3 or 4 more gallons the next day.
If even after knowing why your pool water turned green your swimming pool has become an abode for algae and bacteria time to clean it.
This can be done by shocking your pool with high levels of chlorine.
Then cleaning is much easier than draining.
Shock the green pool.
There will definitely not be any swimming enjoyment while the water is green.
Rob at dengarden says if you can see at least six to eight inches below the surface of the water most likely the pool can be treated chemically.