Well used air stones have bacteria inside them too. I would think that's probably the source of whatever is acting as a surfactant to make these bubbles (usually biological metabolites).
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Re: Air pump question
Well used air stones have bacteria inside them too. I would think that's probably the source of whatever is acting as a surfactant to make these bubbles (usually biological metabolites).
Founder of Frogforum.net (2008) and Caudata.org (2001)
Re: Air pump question
Hmmm, in that case I think I shall go get a new one.
Thanks
Re: Air pump question
It's harmless - I wouldn't worry about it.
Founder of Frogforum.net (2008) and Caudata.org (2001)
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