Description Allgon 5L (retail strength) Controls mould, removes green and red algae from hard surfaces. Active ingredient: Benzalkonium chloride 16% (v/v) 160g/L – Biodegradable – No acids/bleach – Safe on surfaces – Spray & go Rates: Heavy growth – 1 part Allgon 6 parts of water for 250m2 Light growth – 1 part Allgon 10 parts of water for 400m2 Apply when surface is dry. Apply using a power or knapsack sprayer. Ensure 4-6 hours of dry conditions for optimum effectiveness. Kills within 2 days. Heavy growth may take up to 1 week to turn brown. PCS no 98128
