BRS Universal 1 Micron Carbon Block Filter Size:10in After 14 days perform a

After 14 days perform a minimum 30% water change

cleaner and reduces the potential of HLLE developing in your fish due to fine carbon dust particles

Based on our long-term research

3°F Control Precision

Reef Frenzy® NANO is formulated for smaller fish so it is blended to have smaller particles and we omit the seaweed since most nano aquariums do not have tangs

BRS Universal 1 Micron Carbon Block Filter Size:10in After 14 days perform aBRS Universal Carbon Blocks have been specially formulated for industry leading chloramine and chlorine reduction making it the highest performance and longest lasting carbon block in our industry. Chlorine 35,000 @ 1 GPM* Chloramines 3,500 @ 0. 5 GPM* NSF Certified