I have sand in my pool, quite bit, after replacing a broken stand pipe and sand in my filter. My filter is a Blue Torrent D-500, and calls for 175lbs of sand. We CAREFULLY added the sand slowly after installing the new lateral assembly, about 150lbs of #20 silica sand, high grade. It is a 19 inch diameter filter, and when we were done adding the 150lbs there was about 4 inches left of the stand pipe . It was pretty full. We backwashed for a while, rinsed and pressure is good, but there is a lot of sand in the bottom of the pool. If I had to guess about 1/2 of a 50lb bag or more. I put a filter sock on the return, and when the pump is on low, not very much sand comes out, but when on high, it is quite a bit. A fist full after 1 minute. The multiport valve is only about 4 years old or less. Do you guys think it's the gasket? I have never replaced a gasket before, just the whole multiport. I'm baffled on what to do next.
Any help is appreciated!
Any help is appreciated!