So, I got tired of fighting algae in my pool, so I did some research and found this forum. I loved the idea of using cheap generic chemicals (rather than expensive proprietary mixes of chemicals) that will allow me to adjust one single parameter at a time. I figured I couldn't do any worse than the pool store, so I bought the K-2006 kit. (I'd quit doing my own testing because I always had trouble with the color matching tests.) Here are the results from my first sample:
Obviously I need a SLAM. And either I really messed up the CYA test, or two years of 3" pucks have really put me in a tough position. I know the CYA is way too high, which will result in a really high chlorine demand, right? So my thought was to try to get the CYA down to a more reasonable level before I do a SLAM so I don't need a truckload of bleach. I have started to do some water exchanges, but since it's summer in Phoenix I can only do about 5-6 inches per day (which is about 10% of my pool volume). It looks like I would need to do this about 13 times in order to get my CYA from 200 down to 50ppm, so I'll check it again in about a week to gauge my progress.
So, am I on the right track? Or should I be making other adjustments first? Or in parallel with the water replacement? I just figured there wasn't much point in putting chemicals into water that I'm going to be dumping out tomorrow.