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re:DIY co2 for a 10 gallon tank

>Date: Sat, 26 Apr 1997 09:50:00 -0400 (EDT)
>From: BLang1234 at aol_com
>Subject: DIY co2 for a 10 gallon tank
>Is a diy co2 generator practical for a 10 gallon tank? I would think the 
>would be too high in such a small system. Anyone tried this ?  If so, did 
>use the standard mix in a 2-liter bottle or something else. thanks

As an experiment, I set up the standard 2L sugar/yeast CO2 generator on a 
10 Gal tank a few weeks ago. The airline tubing is in the intake tube for 
the Whisper filter, so the bubbles get sucked up into it. The tank is 
primarily used to breed/raise a few platties and contains Hygrophila 
("sunset" variety) and 2 small bananna plants (Nymphoides aquatica, if I'm 
not mistaken).  The hygro is growing like mad with only a 20W plant light 
over the tank.

If you set up the CO2, just be careful of the pH--with such a small amount 
of water it can drop very quickly. After the CO2 started bubbling, I 
checked the pH every few hours and adjusted the KH as necessary. Final KH 
was adjusted to 4 deg to keep the pH around 6.8 - 7.0.  I also add 1 drop 
of Dupla 24 every 3 days or so.

My guess is that since the filter is a hang on the back whisper, there is 
enough surface agitation to keep the CO2 levels from getting alarmingly 

Good luck,