AquaDoc Copper Algaecide for Swimming Pools - 90 Day Formula, 64 oz | Non-Foaming, Non-Staining Algaecide for Inground & Above Ground Pools, Works with your Chlorine Routine - Made in USA

90 Day Algae Control - AquaDoc Double Whammy is a copper-based pool algaecide formulated to help prevent algae growth for up to 3 months when used as directed, supporting long-lasting algae control in balanced pool water.

For Use Against Common Pool Algae - Formulated for use against blue-green, green, yellow, mustard, and black algae when used as directed. For heavy algae, extra steps such as brushing, shocking the pool, adjusting pH to 7.2, and proper filtration are recommended for best results.

Non-Foaming, Non-Staining Formula - Formulated not to foam or stain, helping preserve pool surface appearance. Suitable for all pool types, including inground and above ground pools. Dilute in a bucket of pool water before adding to pools with plaster finishes.

Helps Reduce Chlorine Demand - Made to reduce chlorine demand when used as directed, working together with your regular sanitizer as part of routine care. Keep your chlorine or other sanitizer at its usual level; this algaecide supports your sanitizer, it does not replace it.

Simple Dosing - Add 16 fl oz per 10,000 gallons of pool water for algae prevention, or 32 fl oz per 10,000 gallons for severe algae. Always follow label instructions for complete directions.