The IceCap Bio-Sphere Pellet Biological Filter Media is the compact-format version of IceCap's ceramic sphere media — small 3/5in pellets instead of full-size balls, packing more surface area per unit volume for faster bacterial colonization. One 1kg box contains 145 pellets and treats up to 5 gallons. Dimensions: 3/5in x 3/5in pellets Quantity: 145 pellets per 1kg box Capacity: up to 5 gallons per box Best for: smaller filters and tight spaces where the full-size Bio-Sphere balls don't fit well The smaller pellet size is the key advantage for compact media reactors or nano filter compartments — you get the same ultra-high-surface-area ceramic construction in a footprint that fits where the larger spheres won't.Compatible with: sumps, trickle filters, wet/dry filters, HOB filters, or directly in the aquarium.
