I have been in freshwater successfully for years and finally decided to start my first planted tank. I currently have a 55 gallon cichlid tank and and 54 gallon pentagonal with tetras and etc. Plants are a whole new challenge for me now and I have been researching quite a bit. I was originally planning to go low tech and bought a 50 gallon acrylic to start on. The tank looked great but NOTHING fit the tank right without modifications and I ended up returning it. I stumbled upon a great local sale and now have a 40 gallon breeder, 36" Hagen T5HO, and Rena XP2 filter for about $70 less than the acrylic tank cost. So I have read all about DIY yeast bottle nightmares and think the more automated/high tech systems are the route for me. Can anyone point me in the direction of a few decent lower cost CO2 systems. I want something that I can set up and not monkey with too much. I realize I will have some tweaking and will be watching the settings a bit. I just need a bit of guidance on what systems to look at and what is junk. Thanks!