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It's a Hayward S220T. I'll get some pictures up by tomorrow morning. It has been backwashed and rinsed several times now but is there a specific length of time that it needs to be done when first changing the sand? I'll check the gaskets on the valve when we take pictures. He really didn't...

Yes, which is about where it is if not just a tad higher. Not the first time but yes on the second time i did...figured the first time I created some channels around the outside of the filter because the sand was probably too dry in the middle but when I pulled all the sand out, i didn't really...

Thanks John! The sand was bought at Leslie's Pools and based upon their recommendation, we put 250lbs into the filter. The sand comes to about 6 inches below the top of the filter. When refilling the sand the second time, he made sure to fill the sand with water to discourage air pockets.

My brother recently changed the sand in his filter. After he put it back together, he noticed that the it wasn't filtering very well. So he pulled all of the sand out again to check the laterals. Everything looked fine. Re-filled again and is having the same problems. Observations: - When you...