IceCap's Bio-Sphere is a dense arrangement of small ceramic spheres in a durable and compact one-and-a-quarter-inch ball capable of providing biological filtration up to 18 gallons each. The media's ultra-high surface area is perfect for the mass colonization of beneficial bacteria required for efficient nutrient cycling in both freshwater and marine aquariums and ponds.
Stack in a sump, trickle filters, media filters, wet/dry filters, hang-on-back filters, or directly in the aquarium.
