This airstone works as advertised. The directions are clear and you will be satisfied with the results. My coral tank guru was totally impressed with the fact that I purchased and installed my airstone to improve the quality of my tank.
They sometimes last a while sometimes die out in a month.. I always keep 2 on hand as much as i can. I think I would just do away with this in the future and get a needle wheel skimmer to save the cost on replacing these a few times a year.
Buy Oceanic 8418 BioCube Limewood Mini Airstone Now
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