boognishmofo

I was curious what the biggest bottle anyone has ever used. If you make a bigger bottle and bigger batch will it last longer or produce more gas?

boognishmofo

Does anyone know? A bigger bottle, say 2 gallon will that produce longer than a 2 liter or will it produce more gas in the same time frame?

wi_blue

I'd bet that the larger the bottle the more potential for CO2 output. Though I doubt that it would last longer.

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CuLan

I used 3-liter soda bottle before. To compare to 2-liter bottle, I used the same amount of yeast with 150% of the sugar and 150% water. The intention was to get proportional increase in time (last longer). That is it would produce the same amount of CO2 (bubble count) and last 50% longer (3 weeks instead of 2 weeks). The result: No change. Unscientific conclusion: Most of the yeast can probably only last for 2 weeks in that environment, does not matter how much more water or sugar added.

TAB

I built one out of some 4" abs and fittings, it was about 24" tall so a little over a gallon. Lasted about 3 weeks.

let me see if I can find the pics.

Zapins

I dont think a bigger bottle would last longer if you put all the ingredients in the same ratio as a smaller bottle. I think someone found that if you add some type of gelling agent in the bottle it will last longer.

boognishmofo

Yeah I've read the gelatin recipe. Too much trouble for me. I had started to construct a container out of PVC it was the 2 ft I think 6" diameter peices they sell precut at home depot. I capped the bottom and put a screw on lid on the top. It hold about 5 quarts. I havnt decided if it was worth completing. I might use it to make a fluidized bed filter instead. Has anyone built a bigger one with increased recipe over all. I would love to see those pics Tab if you can. What is abs?

TAB

the black plastic pipe, normally used for drain lines in the US.

I tired to find the pics, but I must have deleted them.

geeks_15

I have a friend who brews his own beer. He rigged his ~5 gallon fermentation canister up to his 55 gallon aquarium...and all the fish died. He swears nothing but gas got into the aquarium.

?????????

Elrodg

I have five two liter bottles daisy chained together with more water added to each bottle. All five meet in a pressure chamber made from an aluminum still tank. It holds a constant 40 lbs of pressure.