PIRANHA Now You Can Increase The Size And Efficiency Of Your Plant's Roots! Roots are the foundation of your plant's ability to intake water and nutrients so they grow well and produce the valuable flowers you so very much enjoy. Use Piranha to put the beneficial fungi into your root zone so your roots gain surface mass and increased ability to uptake moisture and nutrients. Your guaranteed results are increased plant vigor which rewards you throughout your crop cycle and at harvest time. Piranha is specially designed for use with all hydroponic growing media, including coco coir, as well as continuous liquid-feed growing systems such as aeroponics, drip irrigation and emitters, NFT, flood and drain, and deep water culture.