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Re: Aquatic Plants Digest V4 #669 Subject: Re: Silicone tubing and CO2

I think I tried this a long time ago and I'm wondering what people think of
this lo-tec CO2 diffuser solution:

- Blow up a ballon (with respiratory CO2) and attach it to a length of air
tubing with a diffuser on the end (possibly in an inverted plastic cup)
under the water surface.