Dennerle Nano Filter Extention, Black (5840)

Nano filter extension attachable additional filter for nano corner filter. Especially recommended where fish are present. Increases filter a or can be used with phosphate binders or active carbon for short-term additional filtration. Simply fill rinse (to remove possible residue caused by abrasion in transport) and clip on. For filling with Nano filter medium (bio granules/algae stop/active carbon).