BIOHOME as gravel???
- Thread starter vitawater
- Start date
People successfully kept aquariums using UGFs with gravel for decades, so I don't see why it couldn't work. I don't know what size biohome bits are though, if they're large it may be difficult to keep clean.
However, you may get better results cheaper just by using sand, running a UGF in reverse flow.
Sand provides enormous surface area for bacterial growth. Grains approximately 0.25 mm (0.01 inches) across with roughly cubic shapes have a surface area of about 1.5 square mm (0.12 square inches). In a 30 x 30 cm (12 x 12 inch) patch of sand 1 cm (0.4 inches) deep, there will be 57.6 million grains with a total surface area of 86.4 square meters (1314 square feet) which is about 0.13 square meters (1.4 square feet) of surface area within a cubic centimeter (0.06 cubic inches) of that grain size sand.
However, you may get better results cheaper just by using sand, running a UGF in reverse flow.
Sand provides enormous surface area for bacterial growth. Grains approximately 0.25 mm (0.01 inches) across with roughly cubic shapes have a surface area of about 1.5 square mm (0.12 square inches). In a 30 x 30 cm (12 x 12 inch) patch of sand 1 cm (0.4 inches) deep, there will be 57.6 million grains with a total surface area of 86.4 square meters (1314 square feet) which is about 0.13 square meters (1.4 square feet) of surface area within a cubic centimeter (0.06 cubic inches) of that grain size sand.