Read more Pawfly specializes in all must-haves of aquarium accessories such as air pumps, water pumps, air stones, sponge filters, fish nets, algae brushes and other accessories to set up your aquariums. 20 CM Air Stone Cylinder Unlike air stones compressed with sand, the 20 cm air stone is made of superior rubber featuring better permeable effect and producing more steady and even bubbles. A necessity to increase dissolved oxygen in large reservoirs. It is well built to keep stable in water and withstand long-time use. Perfect for both fresh and salty water environment like hydroponic systems, ponds, gardens and large aquariums.
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