The essential material of the aquarium filtering system is that which allows the housing of chemioeterotrofi bacteria that will decompose the organic substances produced by the flora and fauna present, a fundamental process for closing the biological cycle and keeping fish alive, these bacteria break down ammonia and nitrites produced from feces and fish urine, dead leaves and food scraps that are highly toxic and even deadly for fish in the aquarium. Usually for this purpose ceramic rings are used which are known to have an internal hole, this material does not allow you to make the most of the potential for settling bacteria. Haquoss sip glax thanks to the material of which it is composed synergized glass with porous molecular structure and adsorbent allows the settlement of a number of bacteria up to 20 times higher than normal ceramic rings. Particularly suitable for overcrowded aquariums, for marine aquariums or for small filters in relation to the tank volume. Use-rinse the product under hot running water before use to remove any residual dust, 540 grams per 300 liters of aquarium capacity double for sea water. Do not replace the product during use and replace 50 percent of the mass every year.