Product Information Only 10 pieces Nano-Tech Bio-Sphere can replace up to 20lbs (10kgs) live rocks. For Bio-Blocks,simply place them directly in your sump or area with high water flow. Putting all Nano-Tech Bio-Sphere in mesh bag make it easy to maintenance and save huge place for other equipments. It can be used in both fresh water and seawater environment. The Bio-Spheres/Bio-Blocks should be cleaned or replaced every 6 months for optimal results, however when cleaning/replacing old Bio-Spheres/Bio-Blocks, DO NOT replace all of them at the same time. Clean/replace half of the Bio-Spheres/Bio-Blocks such that there are sufficient bacterial colonies remain to reestablish themselves in the newly cleaned/replaced Bio-Spheres/Bio-Blocks. Maxspect Nano-Tech Bio-Sphere 1kg Maxspect Nano-Tech Bio-Sphere 2kg Type Ceramic based. Uniform sized nano-beads form into a sphere. Ceramic based. Uniform sized nano-beads form into a sphere. Package Size 1.0 Kg / 2.2 lbs 2.0 Kg / 4.4 lbs Number of spheres per box 40 80 Surface per sphere 54 m2/ 580 ft2 54 m2/ 580 ft2 Total Surface per box 2,376 m2/ 25,575 ft2 4,752 m2/ 51,150 ft2 Treats 2,850 L / 750 Gal 5,400 L / 1,500 Gal
