About this item

• Designed to be used in marine and freshwater aquariums with a pH of 7. 5 or higher
• Highest porosity and largest useable surface area, per unit weight or volume, of all filtration media available anywhere
• Provides huge amounts of aerobic and anaerobic surface area for efficient bacterial colonization; one brick has about 100, 000 square feet of useable surface area
• Reduces toxic ammonia and nitrites to near zero in ponds and all aquariums, marine or fresh; also reduces phosphate significantly and dissolved organics
• Works excellently as the only filtration medium or may be used in addition to other filtration media
• Doped with Aragonite to buffer pH at the bacteria level, preventing acid buildup