I know a few weeks ago, one of our floater bottles with chlorine tabs in it SUNK and stayed there for several hours before i found it....it bleached a huge spot on the bottom.

Still green today but much lighter - very pale greenish. Still cloudy. How long does this take? I know I had a pretty bad problem and it's only been 3 days. thank goodness it is working! I've been keeping my chlorine between 15-20ppm. My CYA was about 40 the other day. Have not checked it since Sat...does not seem to fluctuate much.