The Aquaforest fluidized media reactors were released last year and are making their way stateside along with a bunch of other Aquaforest products. These reactors will handle a variety of uses — phosphate absorbers like GFO, activated carbon, zeolights, biopellets, etc. — and come in three sizes and can be mounted in the sump or externally.
Each reactor is made from sturdy acrylic and has the typical features you see in other quality builds — sturdy design, seals to battle leaks, filter sponges. But they do tout a special buffer to prevent sponges from deforming and passing fine materials like GFO or small resins through the filter.
You can see the style they added to the filtration plate (in a nice purple to match their brand colors). The slight twists and difference in shapes should help steer the water through the media and help prevent channeling and clumping. They also sandwich the sponge between two plates to secure the sponge.
The top lid is held in place with nylon thumbscrews and a keyhole design and sealed with a silicone o-ring that should stand up better to traditional rubber o-rings.
Aquaforest fluidizing media reactors are available in three sizes. The smallest is the Aquaforest AF90 that holds up to 1.6L of media and stands 30cm tall and is 13cm in diameter (9cm diameter chamber). You will need an external pump to drive it, but the AF90 does have 13mm hose barb fittings to hold the tubing. The AF90 retails for around $110 USD.
The middle size is the Aquaforest AF110 that holds up to 3L of media, is 39cm tall and is 15cm in diameter (11cm diameter chamber), with 20mm connectors. The AF110 retails for about $150 USD.
The largest is the Aquaforest AF150 that holds 7.2L of media, is 45cm tall, 19cm wide (15cm diameter chamber) and has 20mm fittings. The AF150 retails for right around $250 USD.
Check out the video below for a visual overview of the reactors.