Keeping everything organized electrically makes it easier to turn things on and off and plug things into safe dry outlets.

I knew I'd be using the American DJ switches again, as they are very handy for turning on and off specific plugs even if your hands are wet. But where to put them where they'd stay dry and be easily accessible was the question.  It wasn't long before I decided that I wanted to place a Frag Tank on top of this power tower, but wanted to do so in a way that would avoid any water damage due to drips and splashes.

A board on the side allowed me to affix various pieces of gear.

Everything stays nice and tidy in the power station.  That's a UPS at the very bottom, which keeps the Apex controller runnning if the power goes out. In this next picture, you can see the CO2 tank and Aquarium Plants regulator used for the calcium reactor.

The only thing I would do differently wouild put some type of splash guard on the back to keep the wires clean of salt creep and skimmer spatter.  From time to time, I've had to wipe everything down but the next time I'll affix a back to the power station.