hello i did a back wash hesterday evening and alot of sand was comming out via the back wasing i then rinsed it and filtered it. my question is when i added sand to the canister i covered the pipe that leads down to the legs of the filter so no sand would get in. when i installed the variflow valve i just put it ontop of oipe and locked it down with the big clamp that goes around yhe outside of the canister and valve together. my question is do i jave to clamp the valve down to the pipe that comes down to the legs?any help would be great
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