Hello everyone. Our family took the plunge this summer and set up a 15'x42" Intex Easy Set pool. The pool has been great so far, the filter pump (Intex 637R) not so much. Being a first time pool owner I didn't even notice the odd behavior of the pump until the second week of operation, What started as nice flow with aeration bubbles from the jet slowed to almost a non-existent current. After several attempts to purge air and add hose clamps to connections in an effort to prevent a suction side leak with no improvement, I removed the pump from the pool and tested it in a bucket just to make sure the impeller was doing what it should and it was. I reconnected the pump to the pool and fired it back up and just like that, a nice strong current with bubbles. My celebration was short lived though. A mere 9 hours later we were back very low flow, no bubble, no ripples on the surface. I shut the pump down and released the air lock on the top. A small amount of air came out but there was no improvement when I powered the pump back up. Does anyone know what could cause this behavior? What am I missing? Thanks!