Good gravy. Who would have a hobby like that?!
I switched the rocks out on mine last night as I was overdue for a changeout anyhow. I cranked the flow way back on the reactor (to a slow trickle). One thing that caught me off guard, wow, does that ever put out a lot of heat. I'm tempted to swap out the pump to something else. It raised my tank temp 3 degrees F, the only thing I changed was that I cranked the flow WAY back last night (because of the rock changeout) so I think it might be the Sedra on the reactor that's behind the sudden jump.