BioFilm Buster contains an all-natural bio-enzyme. These enzymes actively digest biofilm layers. This enzyme solution contains zero toxins and is completely safe for plants. Choose your desired container size below. Use BioFilm Buster as a single solution for clearing out your irrigation systems. It rapidly cleans out hydroponic and nutrient water reservoir accumulations. It is ideal for drip lines, tape, pipes, and tanks. One gallon of BioFilm Buster treats up to 2-1/2 miles of 1/2-inch dripline! Harsh chemical treatments only remove the surface layer of biofilm. BioFilm Buster?s special formula completely removes all layers, restoring your irrigation system to 100% efficiency. The 30-gallon drum ships directly from the vendor and requires motor freight delivery. It is not eligible for any free or reduced shipping offers.