Pawfly Aquarium 4 Inch Air Stone Cylinder For Larger Pumps Bubble Diffuser Release Tool For Buckets Fish Tanks Outdoor Garden Ponds And Dwc Reservoirs, 4 Pack

An airstone, whose purpose is to gradually diffuse air into the tank and provide oxygen for fish to breathe, is a necessity to have around your aquarium if you are a lover of aquatic animals. Pawfly air stones are made of high quality non-toxic mineral material. With high temperature sintering, these stones are sturdy and durable, have high dissolved oxygen rate and create even and tiny bubbles rather than a limited number of large ones.