The green water is probably algae which is unhealthy.
Cleaning dark green swimming pool.
Even if you normally use non chlorine shock you must use chlorine shock to kill algae.
For the best results use a shock that contains at least 70 available chlorine and shock the pool twice.
The sanitizer makes your pool inhospitable to algae and kills it.
Bring out your pool vacuum cleaner and set it to work.
The only way to clean a green pool fast is to kill the algae that have bloomed in the water.
The primary cause of a green pool is dirt characterised chiefly by algae infestation.
Clean the filter often during this process.
The experts at trouble free pool coined the s l a m.
Pool shock contains a high level of chlorine that will kill the algae and sanitize the pool.
For a medium green pool a 3 pound per 10k gallons of water and 4 pounds for sanitizing a blackish green pool is apt.
If the pool has been brushed and shocked it will take a few days to filter out the green and for water clarity to improve.
Then add sodium bicarbonate to increase the ph or sodium bisulfate to decrease it.
Always shock your pool at night.
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.
To get rid of green water from a pool start by using a chemical test kit to test the chlorine and ph levels.
How to get rid of green algae in a pool.
The basic premise is to determine what level of shock you would need to kill all the algae and then maintain this level until the pool is completely clear again.
This can be done by shocking your pool with high levels of chlorine.
When your pool s sanitizer and chlorine levels fall below optimal levels or the chlorine becomes entangled with other chemicals in your pool you open the door to your tiny green nemesis.
Method shock level and maintain.
If your pool is dark green bordering on a blackish color it may be more effective to drain the pool completely and acid wash the surface.
There will definitely not be any swimming enjoyment while the water is green.
Green water or any color other than pristine clear is a dangerous situation waiting to happen.
Next clear any floating debris and scrub the sides and bottom of the pool with a pool brush.
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.