The Vortex Diatom Filter Powder is an expecially selected grade of washed diatomaceous earth for use specifically in Diatom Filters.
Amounts of Diatom Powder Required per charge in the following filters.
Model D-1 Diatom -1 cup (3oz)
Model XL Diatom -3 cups (9oz)
Model USF Diatom -6 cups (13oz)
Model PF-1 Diatom -1.5 cups (4.5oz)
Model PRO-400 Diatom -1.5 cups (4.5oz)