Well let me start by saying congradulations on a superior build! Love the aquascape too! And I covet your moorish idols!
I would like some more technical information on that deltec eco cooler, I'm going to your BF's website now to see if he has anything posted. If it's not there, I'll likely message back and inquire about the voltage, and amperage, and BTU capacity. Or you can just post it for everybody else who will be wondering the same thing.
Do you have an overall estimate as to the systems overall energy usage? I'm planning my next build (still a year away before I break ground) energy usage and effeciency is going to be key in determining how large of a system I will be building.
Regards,
Andy