Enzyme for Pools quickly removes unsightly scum lines and protects filters from oily build-up and clogging. Compatible with any type of pool sanitizer. 1/2 Gallon Bottle
Add 16 fl.oz per 10,000 gallons of pool water twice a week until the scum lines are removed.
Thereafter, add 4 fl. oz per 10,000 gallons of pool water every other week, or weekly during periods of high usage.