Probiotix Nitrifying Bacteria (30 Vials)

-Helps with Biological Filtration-Complements Prodibio BioDigest-1 Box Treats up to 400 GallonsNitrifying Bacteria for the Water ColumnProbiotix contains strains of nitrifying bacteria which enhance biodiversity and reinforce the effectiveness of the aquarium’s biological filtration. These strains of bacteria are complementary to those in Prodibio BioDigest, so it is recommended to use them together.Dosing Instructions: Use with each water change. Dose 1 vial for every 13 gallons.