Is there anything I can do over the winter to reduce the organic gunk that is in the pool when I pull off the cover in the spring? I usually buy those pool closing kits at Costco which has some sort of sanitizer that floats in the middle of the pool for the winter. However, it seems to make no difference. Whether I use the kit or just close the pool untreated, I have a stinky, green/black swamp in the spring.
I'm wondering if it's advisable to simply lift a corner of my pool cover every few weeks and pour in some liquid chlorine (bleach).
FWIW, I have one of those spring loaded safety covers. I live in Toronto, Canada so the pool water is mostly frozen from January to March. I realize the bleach will just freeze or pool on top of the ice, but during the non-frozen months, I think it would help.