I don't know if the fish bubbler tubing "gives off" anything, I would imagine the air bubbler stone might. But I have used a fish bubbler both with and without the air stone attached for stirring in a homemade generator. Though the CS sometimes went yellow, the yellow CS proved to be a problem of distilled water quality, and nothing to do with the tubing or stone, nor the air being bubbled through.
sol

Deborah Gerard wrote:

Thanks Ode,
I was concerned about the plastic tubing for the air pump maybe giving off something into the water that was not good....deb

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