NeoKusa Oxy+ 3% Hydrogen Peroxide – Shrimp‑Safe Algae & Biofilm Control, 30 mL

3% H2O2 micro‑dropper for algae and biofilm. Routine: 1 ppm = 4 drops/L. Cyanobacteria: 2 ppm = 8 drops/L. Breaks down to oxygen and water; zero copper and dyes. Do not exceed 2 ppm in full‑tank doses; split larger doses for comfort.