Dedicated flushing agents help hydroponic, coco and soil growers clear nutrient salt build-up and protect the root zone from mould and disease. The range includes CYCO Kleanse for weekly flushing, Liquid Science Pure Guard for substrate sterilising, and Oxy-Plus Hydrogen Peroxide for equipment and system sterilisation.
Regular Root Zone Flushing
Over time, mineral salts and organic residues build up in growing media, raising EC and creating conditions where mould, algae and root pathogens like Phytophthora can take hold. Flushing clears salt build-up so roots absorb nutrients efficiently, while sterilising and root-protection products keep the rhizosphere clean between feeds. Together, these products reduce plant stress, help prevent disease outbreaks, and support more consistent growth through to harvest.
What's In This Collection
CYCO Kleanse — a weekly flush additive with natural acids that dissolve mineral deposits in coco, hydro and soil root zones
Liquid Science Pure Guard — a soy-based substrate pre-soak and mould inhibitor with no pre-harvest withholding period
Oxy-Plus Hydrogen Peroxide — a hydrogen peroxide concentrate for sterilising equipment, grow rooms and growing media (in-store pickup only — hazardous goods)
Weekly maintenance flushes for ongoing salt and nutrient management
Pre-harvest flushing routines for coco and hydro systems
Preventative and curative treatments for mould, algae and root rot
How to Choose
Weekly flush vs. pre-harvest flush
For ongoing maintenance, CYCO Kleanse is designed for a once-per-week flush that stops mineral salts accumulating between feeds. Ahead of harvest, the same product can be used at a higher concentration daily for several days in coco or hydro systems to clear residual nutrients from the root zone.
Sterilising vs. prevention
If mould, algae or root rot is already present, Liquid Science Pure Guard is a targeted, soy-based treatment with no pre-harvest withholding period. For general equipment and grow room hygiene, Oxy-Plus Hydrogen Peroxide offers broad sterilising and oxygenating action — though as a hazardous good, it's available for in-store pickup only.
New to hydroponics?
A simple weekly flush with CYCO Kleanse is the easiest way to protect your system without changing your feed schedule. Experienced growers often combine a weekly flush with a targeted root-zone protectant like Pure Guard when disease pressure is high, or Oxy-Plus for periodic equipment sterilising between grows.
A-Grade Hydroponics stocks CYCO, Liquid Science and Growth Technology, with Australian-based support from our Cheltenham, VIC team. Note that Oxy-Plus Hydrogen Peroxide is a hazardous good available for in-store pickup only. Browse our Flushing Agents range to keep your root zone clean and your plants performing at their best.
