Just checked my test kit and it is a Taylor K-2005. Purchased it online. According to instructions, you can get an approximate high chlorine level by filling with pool water to only the 1.8 ml mark and then filling to the 9 mm with distilled water before adding the two sets of drops. You then multiply your reading by five. You can measure up to 25 PPM (approximate) that way. I'll look into the Taylor K1515 add-on kit. I removed all the leaves and have continued to keep the chlorine high and will keep the filter running. The water is clearing again. Also, what do I have to do to complete my registration? I thought I filled everything out but maybe I missed something. I've never used a forum before other than just reading other peoples posts. Thanks again for your help.