ONA Bleech is a potent hydroponics cleaning and decalcification system. It is made in an easy two-step process. Mix equal parts of ONA Bleech and ONA Bleech Activator, wait 15 minutes and then add to water. It is powerful for cleaning but easy on your eyes, nose and skin. It does not give off strong, irritating vapors like regular bleach.

Developed for Cleaning and Decalcification

• Safe
• Eco-Friendly
• NO Toxic Fumes
• Powerful & Effective
• Easy to flush - no risk of residue harming plants
• ONA Bleech will clean spaghetti lines, reservoirs, clay beds and other bed bases from biofilm, calcium, magnesium and mineral deposits and other undesirable organics and inorganics

To make 100 Liters (26 US Gal), add 50 ml (2 oz.) of ONA Bleech Activator (B) to 50 ml (2 oz.) ONA Bleech (A), wait 15 minutes, then add to fresh water. Mix in glass or plastic containers - not metal. Slight chlorine smell released will quickly dissipate. Pump through system until clean then flush with clean water. Mild dilution of ONA Bleech will NOT harm plants or roots