Diy Co2 Bottle Sizes For Small Tank?

[montyII]

A lot of the plans for DIY co2 say to use 2 X 2litre coke bottles. Would this (or 2 X 1.25L botles) produce too much CO2 for a 10 gal tank? I don't want to go murdering my fish!

I was thinking of scaling it down and using 2 X 600ml bottles. Would this provide enough CO2?

Thanks,
Nick

 

[Themuleous]

A single bottle would be fine I would think, unless you've got a huge amount of light. A 1lt bottle would be sufficient.

Sam