DIY CO2 problems - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 04-07-2011, 01:30 AM Thread Starter
DIY CO2 problems

So I've got a HAGEN CO2 system, which is essentially a DIY system because i don't use the bubble counter. I'm sure there are some DIY people out there who have encountered the following problem and I'd like some help with it. I fill the container as directed, but I use a yeast culture ~1 teaspoon, ~ cup of sugar, and to the line (near top) with water. It works, well actually, maybe too much so. The bacterial culture has spread into the gas line leaving the canister and seems to have slowed if not stopped CO2 production. Is it okay for the bacterial culture to be up into the tube? If not, how do I prevent this next time around? Is that the reason for the change in CO2 production?

Also, I'd like to use a gang valve to limit the gas evolved into the tank, but will controlling the pressure increase the pressure to dangerous levels in the HAGEN canister?

Thank you, J.
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post #2 of 3 Old 04-07-2011, 08:36 AM
You used too much yeast so your culture showed excessive growth and quickly ran out of food. The hagen system is not designed much to hold pressure. You must also determine what the effects of pressure are to the yeast in the solution. And yes there is always the chance it can crack the container if pressure gets too high.

.... I'm probably drunk.

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post #3 of 3 Old 04-07-2011, 11:55 AM Thread Starter
Thank you Mikaila! So I will cut back on the yeast for sure and just continue without a gang valve, only have on of these containers for it so no need to bust it.
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