Quote Originally Posted by St8kout View Post
Everyone I asked, from the pool guy to the realtor told me I had a DE filter, but no where in the Triton Mytilus FMY manual does it mention using DE. Then I just read PoolDoc's sticky above about NOT using DE with a cartridge filter. So why did everyone tell me I had a DE filter?
I was going to ask about some grayish-white sediment I keep seeing at the bottom of the pool, but now I'm wondering if it might be the DE that was added.
Did someone HERE tell you it was a DE filter?

The gray sediment is probably DE, if people have been adding DE. You definitely need to clean your filter; you probably need a new cartridge. Try to get a Pentair OEM, or a genuine Unicel or Filbur cartridge.