Hello all I am having the hardest time with my sand filter right now. It is an intex sand filter, I am using #20 silica like it says to, and the sand is brand new. I have iron in my water which is going to be addressed soon, my ph is 7 my CL is 3 and I am having to backwash my sand every 15 minutes and I do not understand why. Regardless of chemistry there is no way I should have to be doing this so often. Any ideas or suggestions? Thank you in advance. Also the pressure barely even goes up even when the flow goes down, so could a leak or multiple leaks cause flow to go down? Because it doesn't after the flow when recirculating, only after 15 minutes, then I backwash for 2 minutes, rinse for 1 and it happens all over again. I'm going through a lot of water doing this.