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Re: [APD] DIY CO2 on the cheap
Have you thought about DIY yeast + sugar? I did this way back and it
was skippy, regardless of the horror stories. I never bothered with
anything more than standard baker's yeast, though folks without much
KH in their water may need to add some baking soda.
On Thu, May 1, 2008 at 9:42 AM, Stuart Halliday <stuart at mytriops_com> wrote:
> I've a small 20litre tank with plants and I opted for the CO2 via a small
> aerosol type canister that with a squirt of CO2 fills a underwater plastic
> cylinder with a CO2 soluble membrane at the top.
> It's made by tetra - http://mytriops.com/mypics/tetra_co2.jpg
> But the refill cans are kind of expensive and I have to order them onlineso
> I bought some Sera CO2 tablets and made a bottle of water and CO2 tubing
> that I can drop a tablet in and the gas fills up the cylinder and lasts for
> 2-3 days.
> Then I discovered Denture tablets!
> Cost of the CO2 can - £6 (US$11.80)
> Cost of Sera CO2 tablets - £4 (US$7.87)
> Cost of my denture tube? - 30p (US 59 cents) :-))
> Next I'm thinking of using Sodium bicarbonate and cream of TarTar (potassium
> hydrogen tartrate) or vinegar.
> A colleague thinks that will do as well and may be cheaper still.
> Seemingly I need to mix sodium bicarbonate and a light acid in water to
> produce the CO2.
> It's fun discovering these alternatives. :-))
> Stuart Halliday
> 200 Million years in the making...
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> Aquatic-Plants at actwin_com
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