One of the best ways to clean air stones is in boiling water. Make sure that the air stone is connected to the air pump, add it to a bucket of hot water and leave it for about 10 min or so. Then hay presto they should be clean.

Its amazing what you learn from tropical fish books...........
CanGro Reviewed by CanGro on . How do YOU clean your AirStones? I use 4" airstones (in buckets), and sometimes they hardly even work anymore after one grow. What is the best way to clean them, or keep them going during flowering? SN Rating: 5