AquaClear 20 BioMax Filter Insert - Aquarium Filter Media - A1370

AquaClear 20 BioMax Filter Insert provides an optimal environment for the colonization and growth of beneficial bacteria which is essential for effective biological filtration and water purification. BioMax s complex bio-ring pore structure allows beneficial toxin-reducing bacteria to thrive. By reducing toxins such as ammonia and nitrite BioMax effectively increases biological filtration efficiency by 30%.