Fluval Spec, Flex and Evo BioMax 42g

Specifically designed for Fluval EVO, Spec and Flex Aquariums, BIOMAX provides critical stage 3 biological filtration. BIOMAX's large surface area provides optimal colonization of beneficial bacteria, which enhance the elimination of fish wastes, resulting in a healthier aquarium environment.

Key Features:

• Specifically designed for Fluval EVO, Spec and Flex Aquariums
  
• Provides critical stage 3 biological filtration
• Large surface area provides optimal colonization of beneficial bacteria
• Enhances the elimination of fish wastes, resulting in a healthier aquarium environment

For Biological Media:

Do Not Replace Monthly: Unlike the physical filter cartridges (which trap debris and need monthly changes), ceramic biological media should not be replaced or aggressively washed out with tap water. Doing so will destroy the beneficial bacteria colony and cause your tank to cycle again. 

Rinsing: If it gets clogged with debris over a long period, gently rinse the ceramic rings in a bucket of old tank water (never chlorinated tap water) during a routine water change.