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Re: DIY CO2 for 10g

> My 2 liter DIY CO2 setup provides the right amount of CO2 for my 20G tank.
>  If I set up a 10, what would be the best way to cut the CO2 production
>  appropriately?  Find a 1 liter bottle and cut everything in half?  Less
>  yeast or less sugar in the same-sized container?  Thanks for any
>  ideas/experiences.

I have experimented with using smaller bottles, down to 16 oz for my CO2 
generators, but found them to be less than satisfactory because they are 
short lived.  I eventually standardized on 2 quart glass orange juice bottles 
for everything (they WON'T collapse and dump their contents into the tank as 
do thin Pepsi bottles).  By adjusting the yeast, I can easily control the 
amount of CO2.  I put in 1-3/4 cup sugar in every bottle, then add just a 
little less than 1/4 tsp yeast for 10g tanks, 1/4 to 1/2 tsp for 20g, 1/2-3/4 
tsp for 30g, and about 3/4 to perhaps 1 tsp for a 55g.  This seems to work 
out well for me, giving me around 15-17 ppm CO2 when the bottle is new.  
About 14 days later on the large tanks, and about 21 days later for the 
smaller tanks, the CO2 is down to about 6 or 7 ppm, at which time I recharge 
the bottle.  Works for me.  Your mileage may vary.