What I do
When I'm away, I use a properly adjusted airstone below Elite intake. I have a DIY yeast setup line going into Elite's venturi intake. Air + CO2 mix did not result in CO2 drop checker fall below green color.
I also keep a glass lid on top of tank
Assuming you're using a regulator/pressurized setup...
Next time you're away for a long time I recommend a 2L DIY Yeast setup if your tank is <20gal, 4L if your tank is >20gal
Last edited by AirstoND; 09-14-2011 at 02:31 AM.