Quick question regarding chlorine levels. switched from baquacil to chlorine (that was an adventure) but my water is clear now. I have a 21ft above ground and decided to use 3" tabs in a floater. I put 3 slow disolving tabs in floater and 1 in the skimmer and for 2 days test strip indicates 0 chlorine. Im not sure what to make of it as it seems that should be plenty. Do the tabs disolve as the pool needs the chlorine or do I need faster disolving tabs or maybe granules. I dont want to lose the water