We just cleaned our Jandy DE filter yesterday and now our spa water is draining into the pool. We woke up this morning and found our spa half-full and the pool was almost overflowed. What did we do wrong? We ran the filter pump and the spa filled back up and everything seemed fine. The water is clear coming out of the returns and water features. But when we turn it off, it looks like the DE filter is draining some water back to the pump filter as I can see water mixed with DE in there (white cloudy water) and the spa is draining very slowly again.
We have the "pull up" to backwash valve and did put it back to filter mode. The air pressure gauge is closed. All the other valves stayed the same. We don't know what else to check. Please help. Thanks.