Pythoff is a broad spectrum disinfecting agent that will sterilise your entire hydroponic system to ensure maximum plant performance all year round. Pythoff is based on monochloramine - it is a non toxic and long lived disinfectant. Being a long lived disinfectant is beneficial for hydroponics because this enables complete system disinfection - from the nutrient tank all the way through to the plant's roots. .
Pythoff is non systemic and therefore it can be used throughout the fruiting period.