^ +1, but i think the new control box already has something similiar built in.
Will the "new ones" that we ordered have the 12 controllable settings versus the 6 that the original ones had? I guess if I don't need these they were only 7 bucks each. I still might use them to really ramp the pumps down if needed as I think 2 40's are going to be over-kill for my tank.