theo wrote: I think it is called zeobright.
DVC500 at last wrote:But it sounds like you need to dump your pool water and clean the liner out with bleach. That much algea would strain any filter media.
djackman wrote:Most sand filters work better when they have "a little" dirt in them. I was going to switch to Zeobrite until I learned not to backwash the filter excessively clean. As soon as the backwash turns clear I stop the cycle.
Changing the spider gasket on the multiport valve made a huge difference on mine. Gasket wasn't chewed up, just had hardened up and didn't seal 100%