I have been trying to solve the mystery of where my pool water is going. I found the pipe at the back of my yard where the filter discharges the backwash, and noticed that it was gushing water even in "filter" mode (the jets in the pool are running as well).
I replaced the spider gasket, but it has not cured this issue. I didn't glue the gasket in place, is that necessary?
In the meantime, i attached the vaccuum hose to the outlet of the waste pipe, and put it in the pool. So now i have the jets going AND the water coming from the backwash line.
Is the water from that backwash line being filtered? or is it getting routed to the waste pipe BEFORE the filter?