CO2 container sizes

[SAFFABOY]

I want to build a CO2 setup .I notice that a lot of you guys use 2L bottles.

I don't particularly like the look of the bottle setup.

So i plan to use containers of a more permanent look.

My question is this.Is there any way of lengthening the time the yeast culture lasts.I know it lasts +/- 3-4 weeks in a two litre coldrink bottle.However if i use a larger container ,with the same amount of yeast etc. that you put in 2L bottles,would that last LONGER?

[jude]

I'm not sure that you'd get enough pressure in a larger container. You might need to increase the quantities. I had lots of trouble with the coke bottle mix - either the mix was too strong and the scummy stuff started going up the airline into the water or it wasn't strong enough and there was not enough pressure to push the C02 into the tank - it even started siphoning back once.

I'd suggest you experiment with coke bottles until you get it right then maybe put the bottle inside a more attractive container.

I don't think having a larger container would increase how long the mix was effective either.

Cheers

Jude

[Pegasus]

I have seen quite a few CO2 users that use the plastic/nylon pressure bottle from one of these spray pack units.

These hold around five litres or so, and the complete unit, plus hoses and sprayer can be had from just about any hardware or garden outlet... including the Warehouse.

Last lot I saw on special were under ten bux

Can't go wrong if you want to experiment.

Bill.

[Ira]

You shouldn't have a problem building up enough pressure, it will just take longer. Especially if you start out with less yeast.

[Luke*]

With your DIY yeast/CO2 setup alcohol is produced and this is what kills the yeast eventually. Brewers yeast or even better champagne yeast is much more tolerant to alcohol than your normal bakers yeast, hence your mix would last longer. Otherwise yeah just get a bigger container; use standard amount of yeast, this way it'll take longer for the alcohol to build up and kill it.

[Dark]

Even using a perfect mixture of high c02 yield yeast and alcohol absorbant additives in an airtight and c02 resistant system kept at optimal temperature i have never managed to get a culture to last more than 3-4 weeks.

Adding more water is likely to make the reaction last longer, but because the yeast will have to go hunting for the nutrients it needs you'll probably just get a lower C02 yield over a longer period of time.

You are better to admit defeat at having to replace your C02 every couple of weeks and concentrate on making the best use of the C02 you are generating.

With 5 tablespoons of sugar, 500ml of water and 1/4 teaspoon of yeast in a 750ml C02 resistant container using C02 resistant hosing and a 100% efficient diffusion reactor, I can get the C02 in my 600 litre tank to dangerously high levels.

The entire setup cost me about $25, but the point is that, in my mumble experience, the use of non-co2 resistant systems and poor diffusion methods are far greater problems than having to replace a yeast container every 3-4 weeks - you should be worrying about having to weed your tank on an almost daily basis!