I read somewhere about plans to make a gas chamber for rats, I can't remember if it was here or on the ball forum. Anyway, the plans said to use a seperate container filled with a little water and run a line inside so the excess co2 gets passed through the water. My question is, what is the purpose of the water? does it make the co2 break down faster so it doesn't fill the room? Any help is appriciated. Thanks.

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