About Yourself: I first started with a 10GL freshwater planted aquarium that was a gift. Bought a 29GL freshwater planted, then recently bought a 55GL freshwater planted and made the 29GL into marine. So far i have done a good job without any CO2, but I want my plants to do better, so I am looking into a pressurized system. Its a lot of money, but worth it from what I have read everywhere. Between this tank and my saltwater they just drain my money, but I'm sure i can fish out about $200 sometime in the next month or so.