TerraClean 5.0 is an activated peroxygen liquid concentrate that eliminates root and stem diseases, including phytophthora, pythium, fusarium, rhizoctonia, verticillium and thielayiopsis. TerraClean 5.0 kills pathogens on contact and reduces the potential of disease spreading. It also releases oxygen that stimulates plant growth, root development and nutrient uptake. Is available in 5-, 30-, 55- and 275-gallon sizes.