I've heard of people using one reactor to run gfo and carbon in. I've been thinking about this lately so I thought I'd get you alls opinion. I have a phosban 550 reactor and am going to run blkreef gfo in it. I have a ton of room left so I thought maybe I can sandwich some carbon between two sponges after the gfo. I know the gfo has to bubble slightly and the carbon doesn't so that's the reason for the two sponges to hold the carbon still. I'd like to see what you guys and girls think. Thanks in advance.


