Air Stone Rectangular 3in good bacteria and you will see the

and you will see the evident quality

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Continuous duty

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400 GPH 18 ft 100 W 1½" MPT EP2900 3

Air Stone Rectangular 3in good bacteria and you will see the3 Air Diffuser with 1 4 barb High quality, durable air diffuser stone. Must be connected to an air pump with airline tubing. Produce a steady stream of uniform sized bubbles Resistant to clogging Air pumps with stones are recommended for preventing stagnant water (where mosquitos like to breed), and creating proper aeration to sustain pond wildlife, including koi and goldfish. Having an air pump can be a literal fish lifesaver in the case that your