A Report on the Use of Karmex to Control Filamentous Algae in Fish Ponds

Several chemicals that have been used in fish culture for the control of filamentous algae are discussed. Their effects on fish and fishfood organisms in ponds are reviewed. Results obtained from applications of Karmex to 26 ponds are presented. Data show that Karmax was effective against several forms of filamentous algae at rates above one-half pound per surface acre. Rates up to three pounds per surface acre had no adverse effects on fish or fish-food organisms. Presented at the 18th Annual Meeting of the Southeastern Association of Game and Fish Commissioners, October 18-21, 1964, Clearwater, Florida.