sorry for not getting back to you sooner but its been real hot in ny so i could only do a little work at night. I have bad asthma so i stay in the ac as much as i can in the day and since my pc is in my basement i didnt want to risk the stairs to reply. Anyway here is where im at i think, using the hth 6way kit(by the way is this kit any good?) TC=15/25(kit only does total CL not FC) PH=7.2/7.5 TA=80 I guess my CYA is around 70/75 i changed a little water since my last reading of 75 but not enough to make a big change. How important is hardness in a outdoor inground vinyl liner pool? when i try that test it takes 8 drops instead of 5 to turn the sample red and 7 drops of the titrant to turn blue. now according to the pool store(they use the strips and scan in into thier computer) shock treatment=1.7 TC=9.8 FC=8.1 PH=7 TA=40 CYA=30 and TH=90 and thier advice is to drain more water. the water dosen't look much diffrent then it did a week or so ago its still cloudy with a green tinge when i brush or vac to waste is see no algae the water looks pretty clean you can almost see the bottom in the shallow end. I added clairifier a few times last week and nothing i can see happened. I think im getting close, but the pool store said water change and no CL for a while what do you think i should do? Last question im not sure if my pump is working 100% it seems to be not pumping as hard(90/95%) i have no bubbles i blew out my intakes and returns checked my impeller which turns easy but squeaks(rubber o ring?) changed the sand in my filter and replaced all gaskets/o rings in my multiport valve the psi guage still needs replacing but i believe it works enough to see a 10lb increase it just seems a slight bit clogged/blocked somewhere. THANK YOU FOR YOUR HELP