GT Oxy 3% - Non Dangerous Goods Oxy Plus Grow. Treat. Control. Clean. GT Oxy 3% is a powerful horticultural oxidiser that releases oxygen wherever it is applied. Used at different strengths, one versatile product supports root development, assists with root-rot treatment, helps control algae and fungus gnat larvae, and cleans organic build-up from growing equipment. Suitable for hydroponics, propagation and tissue culture, GT Oxy 3% breaks down cleanly into water and oxygen without leaving harmful residues. Benefits Promotes healthier roots Increases oxygen availability in the root zone to support vigorous root development and stronger, healthier plants. Assists with root-rot treatment Helps disrupt the low-oxygen conditions in which harmful bacteria and fungi can thrive, supporting affected plants during recovery. Helps control fungus gnat larvae Regular drenches help control fungus gnat larvae living in the growing medium. Helps prevent algae Reduces green water and algae build-up in reservoirs, tanks and other growing systems. Cleans growing equipment Breaks down organic build-up on pots, trays and equipment to help maintain cleaner growing spaces. Supports young plantlets Helps maintain root-zone hygiene and supports root development during acclimatisation. Leaves no harmful residue Breaks down into water and oxygen after use. Application Guide Grow — Root Health Rate: 50 mL per litre of water Mix with water and apply to the growing medium with every second watering to increase oxygen availability and support healthy root development. Treat — Root Rot Rate: Mix equal parts GT Oxy 3% and water Thoroughly drench the growing medium to target anaerobic pathogens and support recovery. Repeat after seven days if symptoms persist. Control — Fungus Gnat Larvae Rate: 150 mL per litre of water Thoroughly drench the growing medium. Repeat after seven days to target any remaining or newly emerged larvae. Control — Algae Rate: 15 mL per litre of water Use to help reduce algae and organic build-up in reservoirs, tanks and growing systems. Product Details Active ingredient: Hydrogen peroxide Concentration: 3% w/v Available size: 1 litre Suitable for: Hydroponics, propagation and tissue culture