ok..so the filter is a pro series 4500GPH 1.0HP sand filter with 110 pd sand capacity. i dont have it yet..comes in on wednesday..currently stil using crappy paper filter that it came with. The pool has been filled and running for almost 2 months now. We use city water. I have a simple red/yellow liquid test kit that i use for chlorine and PH..but i had strips that i used every now and then to keep up with CYA..and alkalinity..as of right now because i have been shocking it simply by adding double the granular chlorine..and now by adding a bottle and a half of walmart bleach the chlorine level is so high its not yellow its orange..the PH is at 7.8... the CYA is 40... Alkalinity is at 180..by using the bleach it is slowly clearing up..it still has a faint green tinge..but looks more like turning cloudy grey