Quadrop is a liquid additive to improve irrigation water quality. Providing bi-carbonate reduction, improved water percolation, reduced irrigation water and fertiliser use, irrigation system protection from corrosion, earthworm inhibitor and foliar nutrient supplements. Each Quadrop formulation is dosed using the Quadrop Injection System which is inexpensive, easy to operate, precise and requires little-to-no maintenance. Quadrop gets you "closer to rain water every time you irrigate".