Is there a shelf life for shock and calcium? I'm thinking of using a calcium hypochlorite shock from 2010. Is "hth Super Sock It shock and swim" an adequate product to use, until I finish what I have?
Provided you don't already have high Calcium levels, it will work. http://www.poolcalculator.com/ can give you the dose- just select the strength of the Cal-hypo from the dropdown menu for source.
As long as the stuff has been kept dry, it should still be good.
Dry and not too hot. The chlorine can break down slowly over time if it is stored in the sun or in a hot shed for years. It won't hurt the pool if that has happened, it will still add calcium, and simply not add as much chlorine as you are expecting.
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!