The Filter Foam Set for the BioCompact 25 includes two complete filter foam sets. Includes filter foam containing activated carbon. It is best to replace the filter foam set when you notice a decline in aquarium filter performance.

The Filter Foam Set for the BioCompact 50 includes two replacement filter foams sets. Each set includes coarse and fine filter foams. Timing to replace the filter foam set varies upon aquarium size, number of fish and plants, and declines...

The 20 ppi Replacement Filter Foam for the BioMaster 250, 350, or 600 includes an ultra-coarse replacement filter foam. The combination of coarse and fine filter foams allows you to customize to meet the filtration needs of your aquarium. Timing...

The 30 ppi Replacement Filter Foam for the BioMaster 250, 350, or 600 includes a coarse replacement filter foam. The combination of coarse and fine filter foams allows you to customize to meet the filtration needs of your aquarium. Timing...

The Pre-filter Foam Set 30 ppi for the BioMaster 250, 350, or 600 includes six coarse replacement filter foams. The combination of coarse and fine filter foams allows you to customize to meet the filtration needs of your aquarium. Timing...

The Carbon Pre-filter Foam Set for the BioMaster 250, 350, or 600 includes six carbon replacement filter foams. The combination of activated carbon filter foams with coarse and fine filter foams allows you to customize to meet the filtration needs...

The Pre-filter Foam Set 45 ppi for the BioMaster 250, 350, or 600 includes six fine replacement filter foams. The combination of coarse and fine filter foams allows you to customize to meet the filtration needs of your aquarium. Timing...

The Pre-filter Foam Set 60 ppi for the BioMaster 250, 350, or 600 includes six ultra fine replacement filter foams. The combination of coarse and fine filter foams allows you to customize to meet the filtration needs of your aquarium....

The ultimate convenience among the external filters for aquariums. The external filter meets the highest demands in water filtration and filter cleaning. The combination of highly effective biological filtering with Hel-X and mechanical/biological cleaning with filter sponges ensures healthy and...

External Aquarium Filter - For the Highest Demands The ultimate convenience among the external filters for aquariums. The external filter meets the highest demands in water filtration and filter cleaning. The combination of highly effective biological filtering with Hel-X and...

The Filter Foam BioPlus 20 ppi for the BioPlus 50, 100, or 200 includes a coarse replacement filter foam. The combination of coarse and fine filter foams and fleeces allows you to customize to meet the filtration needs of your...

The Filter Foam BioPlus Set 30 ppi for the BioPlus 50, 100, or 200 includes a fine replacement filter foam. The combination of coarse and fine filter foams and fleeces allows you to customize to meet the filtration needs of...