Sea Side Aquatics BK100 Bio Chamber Moving Bed Koi Filter 17,000 GPH

Sea Side Aquatics BK100 Moving Bed Bio Chamber for Crystal Clear Koi Water

Struggling to keep your koi pond free of invisible toxins that stress your fish? The BK100 puts an army of beneficial bacteria to work, breaking down ammonia and waste before they can harm your koi. Pair it with an RDF or run it on its own, and you get the kind of biological filtration that keeps water clean, clear, and healthy season after season.

• Biological Filtration: Moving bed media in constant motion gives bacteria massive surface area to break down ammonia and waste.
• Media Capacity: Holds 500 liters of moving bed media (media not included) for serious biological capacity.
• Flexible Setup: Works standalone or integrates into an RDF filter to add biological filtration alongside mechanical filtration.
• Plumbing: Three 4" inlets/outlets simplify connection to your existing system.
• Flow Rate: Handles up to 17,000 GPH, suited for high-volume koi ponds.
• Size: Measures 39"H x 38"L x 38"W to house ample media for high flow.
• Aeration: 12.5"D air diffuser disc keeps media tumbling and bacteria oxygenated.
• Air Connection: 3/4" air inlet connects to an air pump (sold separately).
• Water Quality: Removes toxins and waste for healthier, clearer koi pond water.

How the Moving Bed Design Powers Better Biological Filtration

The moving bed principle keeps filter media in constant motion, tumbling freely inside the chamber. That movement creates extraordinary surface area for beneficial bacteria to colonize, and those bacteria are what break down the toxins and waste that build up in a koi pond.

• Constant media motion keeps the biofilm active and self-cleaning
• Massive colonization surface supports the bacteria that eliminate ammonia and waste
• Holds 500 liters of moving bed media (media not included), giving you room for serious biological capacity

The result is superior water quality that directly supports long-term koi health.

Pair the Sea Side Aquatics BK100 Bio Chamber With an RDF or Run It Standalone

Flexibility is built in. Drop this chamber into an RDF filter setup or use it on its own, depending on your system.

• Standalone use gives you full biological filtration without extra equipment
• RDF integration lets the biological filtration complement the mechanical filtration an RDF provides
• Three 4" inlets/outlets make plumbing into your existing setup straightforward

When mechanical and biological filtration work side by side, your water gets both particle removal and toxin breakdown in one clean flow.

How the Sea Side Aquatics BK100 Moving Bed Filter Delivers High Flow Capacity for Larger Koi Ponds

Bigger ponds move more water, and this chamber keeps up. With a max flow of 17,000 GPH, it handles high-volume circulation without becoming the bottleneck in your system.

• 17,000 GPH maximum flow suits demanding, high-turnover setups
• Generous 39"H x 38"L x 38"W footprint holds enough media to match that flow

Aeration That Keeps the Media Moving in the Sea Side Aquatics BK100 Biofilter

Air is what drives the moving bed. A pump feeds air through the chamber to keep the media tumbling and the bacteria oxygenated.

• 12.5"D air diffuser disc spreads a steady stream of bubbles across the chamber
• 3/4" air inlet connects to your air supply (air pump sold separately)

Steady aeration keeps the whole bed active, so every liter of media stays working for your water quality.

Why This Biofilter Belongs in Your Koi Setup

Built as an advanced biofilter for koi keepers who want dependable water quality, this chamber pulls the biological load off your shoulders. Beneficial bacteria do the hard work of removing toxins, while the design gives them the surface area and oxygen they need to keep your fish healthy.

Product Specs

Product Attachments

Sea Side Aquatics BK100 Drawing