Quote Originally Posted by rmeden
a DE filter you can't backwash? Why not just buy a backwash valuve and install it before the filter?

I don't think the backwash valve came with my filter, I think it was just added during the install.

Robert
It is kind of strange, it doesn't bother me much really because I would want to open the filter up and clean it anyway.

The backwash valve isnt really what this thread is about, its mostly about the DE that is going back into the pool. I just don't understand how DE can be going back into the pool, i have brand new grids and a new maifold. I just dont see how the DE is going past the grids and back into the pool...