We have a 15x30 AGP, 13000 gal. We had our cover rip this year in February and dumped some leaves etc. into it. It still covered most of the pool but finally, the cover was removed in late March, early April. My question basically is this. The water, of course, is slowly turning green and my wife wants to dump a gallon or two of chlorine bleach into the pool to combat that. I'm assuming that's ok? Technically we use Pristine Blue/chlorine shock but I'm wondering if this is the good time to switch to the TPC method. I didn't want to technically open the pool yet because of the temps being too cold and possible freezing weather. Wondering if we should let it run it's course until the freezing weather is passing or just dump in the chlorine.