AquaClear 50/200 BioMax — Ceramic Bio Media 125 g HOB Filter - Fluval

The AquaClear 50/200 BioMax (125 g) is the replacement biological filter media for Fluval's AquaClear 50/200 hang-on-back power filter. Its complex-pore ceramic offers a large surface area where beneficial bacteria grow.

Filtration Role

BioMax provides biological filtration: its complex pore system creates a large colonization surface for nitrifying bacteria, which convert ammonia and nitrite into less harmful compounds.

Compatibility

This media is designed specifically for the AquaClear 50/200 filter (aquariums 76-190 L / 20-50 US gal) and is safe for both freshwater and saltwater.

Maintenance and Replacement

Per Fluval's directions, rinse BioMax monthly in water taken from the aquarium (never chlorinated tap water) and replace it every 3 months. Never replace all media at once: stagger replacements to preserve the beneficial bacteria colony.

Use in Marine Aquariums

AquaClear BioMax is saltwater-safe. In a reef setup, it reinforces the biological filtration of a supplemental or quarantine filter.

Why Buy AquaClear at ReefSolution

ReefSolution is a marine aquarium specialty store based in Laval, Quebec, shipping across Canada. For complete size-50 upkeep:

• AquaClear 50 Power Filter - the matching Fluval HOB filter (76-190 L / 20-50 US gal).
• AquaClear 50 Foam Insert - mechanical media and biological support.
• AquaClear 50 Activated Carbon - chemical media for odors, tannins and discoloration.

Frequently Asked Questions

How often should I replace the AquaClear 50/200 BioMax?

Fluval recommends rinsing BioMax monthly in aquarium water and replacing it every 3 months, without replacing all media at the same time.

Is AquaClear BioMax safe for saltwater?

Yes. AquaClear BioMax is used in both freshwater and saltwater to support biological filtration.

What does BioMax do in the filter?

Its porous ceramic hosts the nitrifying bacteria that drive the nitrogen cycle, for stable, healthy water.