The water-powered Dosatron D400MZ30000 is another new addition to the  Mega-Flo series. This high flow fertilizer pump has a maximum flow of 400 GPM and a minimum flow of 110 GPM with a 4” flange connection. The Dosatron D400MZ30000 injector is water-powered and has a ratio range of 1:30,000 to 1:8,000 (0.003 to 0.0125%). It features externally adjustable injection rates and built-in bypass with dimensions of 57” x 31 ½” x 20 ¾”. The D400MZ30000 fertilizer injector is great for several applications, such as nutrients, fertilizers, insecticides, fungicides, and much more.