So now I'm leaning towards a CO2 system. Turns out my wife "likes the plants in my tank more than the fish". I'm looking for a legit setup that won't run at night. There is too many choices if you google CO2 aquarium system. Anyone have links, tips or advice? I want a good setup but don't want to spend more than I have to. I've been reading about this for a few days but there is so many choices. Anyone have a link for a good but cheap kit?