This is my first post. I'm new to the hobby and need some advice. I'm setting up a 65 gal tank and am trying to decide what I need in terms of co2. I'm leaning toward a pressurized system because I travel every week for my job and want to make it as automated as possible. My spouse will help but doesn't want to have babysit the tank. Is a controller necessary or can you get good results with just timers. I'll get what I need to do the job but don't want unnecessary fluff. Sorry for the long post.