Help me plan under my tank

[Eb0la11]

Hey guys,

So I'm building a 165G and have a metal stand so plenty of room under it.

I have 6 feet to use. I am planning on having the sump under there, which is 30 gallon 3 foot x 1 foot tank and also a QT tank which is a 10 G. I also will need a bit of room behind the sump for an out of sump skimmer.

What else should I plan to leave room for under there? I wont need to put food or nets or anything like that under there, really, as I'll have a cabinet designated.

I need a place to store the 3 ballasts for my light, but I dont want any chance of them getting wet so Im thinking more beside the tank.

What do you guys think? What else should I plan for or at least plan to leave room for?