Bio filter medium for the best biological decomposition efficiency - 450 square metres per litre

After the mechanical treatment of the water by mechanical filtration (filter sponge), substrat pro offers perfect colonization conditions to the important purification bacteria through high density packed volume using a spherical shape and the perfect surface structure - maximum number of bacteria on each sphere. The surface is also highly porous, increasing further the surface area for bacterial colonisation. This combination provides the maximum number of bacteria which ensure clear, healthy water, stable water values and longer service life of the filter. Substrat pro reduces the peak nitrite loads better and can be GENTLY rinsed out (in your aquarium water).

Replace your ceramic noodles and see the difference! clearer water and healthier fish.