I’m using 45 MarinePure biocubes in a converted ATO tank. I seeded it with Algae Barn pods. They show up time to time in my scope. I've been warned I’ve built a detritus trap. Not concerned yet. it’s a relatively new tank and I'm still trying to get N and P up. One day I'll deconstruct it photograph what's found.
Here are some pics using a USB magnifying scope. It's quite a cavernous environment, from this perspective.
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I ran the numbers and these 45 cubes have the surface area of two ice hockey rinks. Pretty incredible!
Proof:
Total cubes: 45
Single 2” Marine Pure ceramic cube has 720 sq ft surface area.
45 cubes x 720 ft2 = 32,400 sq ft of surface area.
The total area of a NHL ice hockey rink is 16,327 sq ft.