I have the Sera Flore Active CO2 Reactor 500 and absolutely love it. Zero bubbles in the aquarium. 10" H x 4.5" W x 3" D. You can see it right next to the Fluval 206 to get an idea of the size. It comes with a mount with either suction cups(worthless in cabinet) or you can use screws which is what I did. I put the output of the Fluval 206 right behind the output of my Fluval FX4 filter to get the best co2 distribution in all of my 60 gallon aquarium. It works amazing I tell you. As you can see zero bubbles.
Sorry the pics are tilted to the left. Not sure why.
Last edited by Darkblade48; 03-14-2017 at 02:03 PM.
Reason: Please use the edit function for back to back posts to keep threads cleaner