Thanks for the input folks.
I went to see the tank tonight, and liked what I saw well enough. I will need/want almost all new equipment over time, some things sooner than others. But the price....210 gallon AGA, stand, canopy, all equipment, and ~150lbs of live rock, $1500. I'm sure better deals have been had, but this is what I can find locally and it's a fraction of the cost to go new. So that's the draw.
The livestock is actually pretty minimal for the tank size. 2 smallish tangs, 2 clowns, and a few damsels. One chocolate chip starfish, one rock with zoa, and one small Xenia. The corals are not thriving, as the lighting is not right for them and half of it was burned out. I can fix that. I'm betting the small re-cycle that happens following the move would be pretty bearable given the light stock.
So here's my thought on how it would work:
>Go buy 6 60-gallon totes, a very long tube, and a pump that can push that length (garage to ultimate spot in the basement is at least a 50 foot distance, maybe more)
>Mix ~150 gallons new salt water in 3 of them, match salinity to existing set-up. I do have an RODI permanently plumbed in the basement.
>Prep new sand bed (rinse)
>Get help, rent a truck, take the other 3 totes with me
>Pump ~150 gallons from the existing set-up into the 3 totes
>Put the fish and coral in one of the totes; have that one running a heater and powerhead. Put the rock in another one of the totes
>Pump/siphon the remainder to a drain
>Throw out my back putting the empty tank and everything else onto the truck. My help will be useless bc they'll be teenagers
>Drive home (~55 minutes)
>Get hernia moving stand, tank, canopy down to the basement
>put prepped sand in first
>transfer animals to a QT tank, not really to QT but just to hang out while...
>pump water from the totes in the truck down to the tank
>add the pre-mixed water to top up the system; maintain temp
>get remaining equipment set-up and running
>transfer the animals
>drink
Two things occur to me: first, I can't really clean the tank (and it needs it). I'll have to do this like any other up-and-running system, after the crazy transfer day. The other thing is that it's 32 degrees outside. I could do one of the totes in the back of the minivan, and use that one tote as the transfer tote for the animals, taking advantage of the climate control. Is this necessary?
So, anyone have any glaring critiques of my plan? Am I leaving something out? Thanks again!