Hello everyone. Here's the deal. All the equipment mentioned here is brand new. Hooked up my Intex 2650 filter to my pool last week, and everything appeared to work fine (other than I didn't backwash enough - that's another story). Finally got around to connecting my heat pump last night, and the outlet flow into the pool appears to be significantly lower. Also the pressure gauge rose from about 6 psi to 11 psi. Backwashed, and same thing. I do have one small leak going from the heater to the SWG but not enough to account for low flow. I don't know how to link to other threads but Osiviper posted awhile back and showed a video of his low flow. Mine is like that or worse. The water being pumped through the heater couldn't have that much negative effect on flow could it?