RNR 2” Ball with Brass Nozzle Aquarium Air Stone  (6 Stones)

An Air Stone, whose purpose is to gradually diffuse air into the tank and provide oxygen for fish to breathe, is a necessity to have around your Biofloc Fish Farming Tank and aquarium. It’s also a must have for Hydroponic and Circulation system. RNR Air Stones are made of high quality non-toxic mineral material, with high temperature sintering, stones are sturdy and durable, have high dissolved oxygen rate and create even and tiny bubbles rather than a limited number of large ones.