We upgraded the pump that came with our pool to a intex krystal clear sand filter pump to go with our Intex SWG. It has been working really well, have had some hiccups, but nothing we weren't able to fix. Mainly the skimmer attachment wouldn't stay down and would pop up and suck air into the line. Finally got the idea to use an ankle weight (it wraps around and has an adjustable strap) on the hose under the skimmer and that has done the job beautifully. Anyway, our pump isn't pulling in the water like it was. No suction for the skimmer, there's output, but not strong. Backwashed and rinsed, same thing. Have it on recirculate now and it's doing great. But I know that bypasses the filter. Do I need to take a look at the sand? The humidity here is unbearable, heat index around 105. Don't know why I threw that out there, but there it is. Any advice is appreciated.