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Old 01-15-2007, 07:45 AM   #1 (permalink)
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Default DIY co2~ need some opinions

hello everyone. currently for my 15 gallon im running a 2L yeast powered co2 setup. im wondering what are the best ratios and ingrediants for DIY co2. also is there any way i could make my setup a lil more high tech or is there a cheap automated co2 setup out there that would be good to use? i would like to be able to regulate how much is going into the tank especially at night. finally, im ordering an eheim 2213 canister filter and i would like to know if theres any way to run co2 through the filter? thanks ina dvance everyone

-Aaron
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Old 01-15-2007, 04:21 PM   #2 (permalink)
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Basically there isnt any way to control DIY CO2 without possibly having a mess on your hands. What most prople do is run an airstone at night to gas off the CO2.

For an pressurized CO2 system you are looking at about $200. If you are going to upgrade buy qualtiy stiff the first time then you wont have to upgrade in 6 months to a year.

You can make a DIY Inline reactor. If you search for it with the search option you will find a couple different designs.

MAHA
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Old 01-15-2007, 07:24 PM   #3 (permalink)
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If you go w/ yeast, I can tell you a couple of things...

1) Don't use more than ~23% sugar (by vol.) as it won't get used. A 23% sugar/72% water mixture gets up to 10% ethanol at the time the sugar runs out. Much more sugar than that just goes to waste.

2) run the CO2 tube right into the inlet basket of the Eheim. Working well for my 2215.

3) To keep some air in the mix in my 5g, I have an air pump on a timer, stone nr. top edge of water. It runs 15 min. on, 60 off, repeat.
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Old 01-16-2007, 04:16 PM   #4 (permalink)
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Quote:
Originally Posted by ampdaman View Post
hello everyone. currently for my 15 gallon im running a 2L yeast powered co2 setup. im wondering what are the best ratios and ingrediants for DIY co2. also is there any way i could make my setup a lil more high tech or is there a cheap automated co2 setup out there that would be good to use? i would like to be able to regulate how much is going into the tank especially at night. finally, im ordering an eheim 2213 canister filter and i would like to know if theres any way to run co2 through the filter? thanks ina dvance everyone

-Aaron
The the airline straight into the inlet basket of the eheim. I do this with my 2215 with no problems. It does burp out some gas every now and then but nothing to worry about really.

I don't think there is a best ratio as the yeast differs. My suggestion to keep a pretty stable supply of co2 is to run 2 bottles and start them of 2 weeks apart so you have a constant supply. That's what I have done.
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Old 01-16-2007, 04:26 PM   #5 (permalink)
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I currently run 2 (1 gallon) containers, I put a shut off valve on both lines going into the containers, this way I can remove 1 container without losing pressure. Works great, then I hook it back up.. wait about 1/2 hour and then open the value... CO2 comes pouring out. Easy way to switch 1 container if your running two.
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