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just run the co2 into a powerhead dude. Whether co2 diffusers are better than this im not sure. But a guy with a very successful planted tank uses the powerhead method.

Don Moyle, who has his tank on www.ausdiscus.com.au he has his DIY stuff there as well.

In Don Moyle's co2 soda bottle, does he have the inlet tubing that goes into the bottle submersed in the water? Does he do this to catch the gas as it is released by the fermentation process in the...