Which of the following is NOT an active ingredient for filamentous algae control?

• A. Copper-Based Compounds
• B. Sodium Hypochlorite
• C. Alkyl Amine Salts of Endothall
• D. Sodium Carbonate Peroxyhydrate

Answer: (B)

Filamentous algae control relies on active ingredients that are specifically formulated to affect algae cells in pond water and are labeled for that use. Copper-based compounds provide copper ions that disrupt photosynthesis and essential enzymes in algae, making them effective against filamentous forms. Alkyl amine salts of endothall interfere with algal cell membranes and metabolism, leading to rapid growth inhibition and death. Sodium carbonate peroxyhydrate releases peroxide-based oxidizers that damage cellular components of algae, giving fast-acting control.

Sodium hypochlorite is a strong oxidizer used primarily for disinfection and general water treatment, not as a labeled active ingredient for filamentous algae control in aquatic products. Its effectiveness depends on water chemistry, it can harm fish and beneficial organisms, and it isn’t formulated for this specific use. Therefore, it is not an active ingredient for filamentous algae control.