Pool having a dark green water colour.

[Guest]

Th ecolour og the pool is a dark green colour. After a shock treatment the pump is left runing over night to clear the wate. The next mornig the pool is still green. What sould i do. The pump is a 1 horse power pump and filters 75 gallons per minute. The pool is a 42,500 gallon pool. Its's a small and a big pool separatetly. [/url]

[dynamictiger]

Have you done a water test and what where the results?

When did the pool go green?

What chlorine are you using?