When I put up my Intex Sand Filter I noticed that the PSI was around 10 (in the green zone). I'm sure being new in using this I've gone over board with backwashing and etc.. Today I noticed that my PSI is now down to 6 PSI. In addition to this, where the outlet hose goes into a basket before it goes into the pump, (the place where you can let air out), before I start it, I always let all the air out before starting. It seems like within 5 mins the water level goes down (about 1/2 way) as if air is getting back in. All hose connections are tight, no leaks. Would it be my skimmer that is causing the air or what?
Thanks For the Help