Hi: I have been growing mostly easy plants in a medium to low light setting. Although they have been surviving, I decided to give things a boost with CO2. I have obtained the very basic equipment to go pressurized but am not ready to start an intense ferts program. I want to continue to keep things simple and am starting to wonder if I made a mistake getting set up for CO2. Is there a compromise I can go to that would let me use a little CO2 without lots of extra ferts?