Hi, Tom,

Man, it seems like sand filters are taking a beating on the forum this year.

I would submit that any properly operating sand filter is capable of keeping a pool sparkling all year round. They have been around for decades and, if there was a fault in them (like the inability to filter dead algae, red dirt, etc.) they would've gone the way of the Edsel.

So, I'm thinking it might be a little premature to blame the filter. What are your numbers for FC, CC CH, pH, Cya? I'd make sure I was starting with balanced water and then look for some mechanical issue in the filter.....about the last thing I would look to do is put in Zeobrite...sand has worked too long, too well, for too many people.