Last modified on 23 May 2014, at 00:36

airstone

EnglishEdit

EtymologyEdit

air +‎ stone

NounEdit

airstone (plural airstones)

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  1. A piece of aquarium furniture, traditionally limewood or porous stone, whose purpose is to diffuse oxygen gradually into the tank, eliminating the noise and large bubbles of conventional air filtration systems.

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