This Package combines THREE of the Coralife BioCube Filter Cartridge Replacement, 2-Packs, with one Coralife Marine Pure Bacteria Supplement. Adding Bacteria should be part of your regular BioCube maintenance along with the monthly or every six week Filter Cartridge changes.

The Coralife Marine Pure Bacteria Supplement contains millions of beneficial living marine bacteria and enzymes that will live on aquarium surfaces and breakdown the ammonia and nitrite that is created by fish waste and excess food. Enzymes will help breakdown organic sludge that often causes poor water clarity.

Marine Pure can be used for aquarium start up and as a weekly water routine to help reduce aquarium cleaning and maintenance. Marine PURE is easy to dose and is a time release ball, so it cannot be overdosed. For aquariums at start-up, add two Marine Pure balls per 30 gallons and under of water. To maintain a healthy and clear aquarium, add one Marine Pure ball per 30 gallons of water per week.