SINGLE MICRO PORE DIFFUSER

spent like 30$ on this airstone and the seal was loose and didnt even bubble as much as a normal airstone

My only regret is that I did not order a larger (double) stone. It is exactly as described: small bubbles over a larger area (about 6 inches.)

so now i have 4 of these things. their great. they never clog, the only cleaning they seem to need is running under water.be on the gentle side and i think these things will last forever.i would recommend these over really cheap air stones.it takes time to get all that's needed tho