I am new to this whole posting thing. Have a 4 yr old pool but this is the first yr trying to take care of it myself. Sent daughter to get water tested (a 15 mile drive one way). She came home with a box full of chemicals. The pre season sale was going on and they looked back at what we had purchased last year and sold her this years worth since they were on sale.3 bottles of calcium plus, 2 bottles of alkalinity plus, phosphate remover, 3 bottles of pool plus, gallons of pool shock, pool blue clarifier ( have not even touched some of chemicals and they do not accept return on chemicals) The water had been very cloudy (not able to see the bottom) . She is satisfied says it's not green, it does not stink, it's ok. I want it clear, and have been working to get it there by reading up at your site. At one time after I used a flocculant could see the bottom and vacum to waste. Have done this at least three times taking the water level down to bottom of the skimmer and then refilling with fresh water. We use a floating chlorine tablet dispenser. 3" tablets are trichloroethane-s-triazinetrione99%. Pool shock used at first also has that chemical present and one has dichloro-s-triazinetrione. CYA was way high before but now at least it is on the chart at 100. Do I just keep trying to replace water and should I stop using those chlorine tabs and go strictly liquid chlorine. Today's test results: FC-4;CC-0; pH-7.4; Alkalinity150; Calcium hardness-225; CYA-100