$2.99
In stock. Available at: Petsmart
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Airstones assist in maintaining even water temperature and circulation. Airstones assist in maintaining even water temperature and circulation when powered by an air pump. Porous stones distribute air evenly, which is healthful for fish as gases are dispersed through the water surface. Attaches to mini or standard airline tubing (not included). Each airstone measures 1"L x .5"W.Airstones should be routinely changed and cleaned. A clogged air stone will create backpressure, which will shorten the life of your air pump. To test it, simply blow through it. If you can't easily blow through the air stone, neither can the air pump.

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