Technically, the issue is the low pH and its effects on a copper heat exchanger. The pH isn't actually terribly low so the advice is conservative. Also, if one has a titanium or cupro-nickel alloy heat exchanger there is less risk. In your case with no heater there should be no problem at all.
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!