Lets stick to the hobby side of this build thread for a change.......
@helen ann What kind of sand will you be using and are you doing a DSB?
Any plans on some egg grate under your rock or just plain on the bottom?
How far above your tank you're hanging these lights?
Didn't read anything about a controller but will you be using one and if so which controller and why?
The flow pattern will be moderate or will you be using full blown EM mp40's QD?
Of course you will go for the Vectra M1 on the return pump do you?
What kind of reactor, in sump or out sump, two stage or one?
Did you thought about a CaRx for your ALK, CAL and MAG?
Where in your place you'll be placing the tank any pics of the location?
Make sure you use a surge protector as most DC equipment will fail in the next two years give and take if you don't.
What are you going to use to cycle your system, shrimp, LR, Dr Tims or nothing and going the long route?
Will it be hard plumbed or using tubing or half and half?
What will you planning to do about the temperature as you will have a lot of equipment going on in a still not so big tank?
Any plans on setting up a QT at the same time?
Will you be using backup batteries............??
I'm sure you will filter over socks in your sump?
Maybe with a new tank you can go Triton and no more water changes and have more time for other fun stuff or will you be the bucket girl once a week?
I'm sure I missed some questions but.........