For freshwater and marine aquariums

· Efficiently removes nitrate from your aquarium

· Proprietary technology specifically designed to stimulate growth oF anaerobic bacteria.

· Anaerobic bacteria completes the nitrification cycle which breaks down nitrate into nitrogen gas, exporting nutrient from the aquarium.

· 2 Blocks Treats up to 1,000L / 264 Gal.

Maintenance

The Anaerobic-Block should be cleaned or replaced every 6 months for optimal results, however when cleaning/replacing old Anaerobic-Block, DO NOT replace all of them at the same time. Clean/replace half of the Anaerobic-Block such that there are sufficient bacterial colonies remain to reestablish themselves in the newly cleaned/replaced Anaerobic-Block.

Dimensions: 3.75" x 3.75” x 1”

Includes 1 x denitrification catalyst