Grey sludge in water

Answer 1

It sounds like you have an algae problem. Shock the pool and toss in a dose of algaecide. Take a sample of the water along to your pool shop and get it tested while you are getting the algaecide.

Answer 2

If your pool water is a blue or gray color and you want to get it to clear up, try using bleach. If you can't get it to clear up, you may need to drain the water and refill it.

Answer 3

Make sure it is balanced and add clarifier to remove the cloudiness.

Answer 4

head gasket has gone