Thought my only problem was out of whack chemicals, but just now found we have dirty water shooting out jet back in to pool. A little background: our faulty spider valve allowed h2o to bypass to the waste line while in filter mode...so water was leaking out of pool into the yard basically. So, we installed a valve in the waste line to prevent water loss...so during normal filtering, the valve is closed, during backwash and rinse, the valve should be open. Here's the problem: I forgot to open the valve during backwash and it all went back into the pool. We have since changed out sand (needed it anyway), but, even when valve is properly closed, it seems we are getting murky water shooting back into pool when set to filter. I thought it was just cloudy because chems are so out of whack. We have a new spider valve enroute, but could I have damaged something in the filter, etc due to the pressure of backwashing back into the system, etc? Anything we can check?? Thanks!