I know that I need to get a CO2 system for my newly set up 75 gal tank with 260w of light. Given the size of the tank, DIY isn't going to do the trick. My water is pretty low KH (maybe 2 degrees), so I have to add baking soda to maintain 4 or 5 degrees for pH stability (I bought some crushed coral, but haven't added any to the filter basket yet). My suspicion is that a fully automated C02 setup probably makes the most sense, no? Anyone have suggestions as to where to get a good system at a reasonable price?
