If this is a super SPS reef with tons of acros, so thick you can barely see in, than No. In this case I would gladly sell you an excellent CO2 controller and Regulator. I would recommend a large Korallen or Schuran reactor. If you have a more normal reef tank with a "wallpaper" of polyps and mushrooms on live rock, a few LPS and maybe 6-10 heads of SPS, than it will serve your needs. All Calcium Reactors have their quirks and you should research a few of them. The Tunze unit is very simple, fairly easy to adjust. It uses about 4-6 bubbles a second when running, drip rate is set for 2-4 drops per second. You do have to use a pH controller set with a solenoid. It uses a man made calcium carbonate media, it is quite pure. It does seem to dissolve slower than more porous natural medias. It is not as powerful as many other units but in the right situation is an easy to use unit.