Use BIOGUARD SMART ALGICIDE To Prevent Algae Growth.
Label Directions For Use: Read entire product label and use strictly in accordance with precautionary statements and directions.
Label Directions To Prevent Pool Algae: With pump and filter operating, initially apply 8 fl oz of this product per 10,000 gallons of pool water.
Thereafter, for weekly application intervals, add 1.5 fl oz per 10,000 gallons of pool water. For two week application intervals, add 3 fl oz per 10,000 gallons of pool water every other week. Apply more often is pool volume is diluted by heavy rain, frequent backwashing or partial drain/refill.
Wait at least 15 minutes after application before entering pool.