Just purchased a mesh safety cover from intheswim.com and received a free winterizing kit. I received two items that I am not sure if they are worth using. First are small bags of chlorine free shock (43% Potassium Monopersulfate )"Unlike chlorine-based winterizing pool chemical kits that reduce the effectiveness of algaecide and other winterizing chemicals and can stain and bleach pool walls or damage pool liners." Compare to Oxy-Brite┬«, Impact┬« and Shocktrine┬«.
Second is a super sanitizing floater with 4lbs of "non chlorine" oxidizer which supposedly "robs the water of carbon dioxide, one of algae's primary food sources."
Is this a better way than just shocking with bleach and adding algecide? This will be my first pool closing and would like an feedback you have on what has and hasnt worked.
Also wanted to know...have read that over winter CYA tends to get eaten up by pool organisms. Is it worth it to raise CYA in the pool to anticipate CYA loss? Thanks.