I have a 10 gallon tank with 4 neon tetras 2 cardinal tetras soon to be 4 a spotted cory and an Otto soon to be 3 ottos and i have far more oxygen than my plants like and i would like to run a co2 system. i have seen the yeast based systems but i'd rather avoid them simply because they seem like more work than their worth plus with the amount of plants id like to have i don't think ti'd be able to provide enough co2. any information anyone can offer i would be verry thankfull.