Cloudy water.

[JohnT]

Post test results and we can help. Without them it would just be a guess. Chlorine, pH, TA and CH at least.

[jscott]

I tried using the floculating agent - Aluminum Sulfide and it is working. The recommended method is to put about 50g per 10,000 litre into the skimmer. It is supposed to form a gell on the sand filter and it seems to be working for me.

John