A few responses....
dgasmd..... I currently use (4) Dolphin 5600's for the closed loop. Those compression fittings can be had from any online outfit that carries Aquadyne accessories. I spend about an hour a day just doing little things like..cleaning the glass,cleaning the skimmers, hand feeding aneomes, replacing reactor media, etc. I don't do all these things everyday; but, a little here and a little there... it all adds up to about an hour a day. I don't mind, at all, doing the maintenance.
Matt....I'm not a DSB fan. The sand you see is only about an inch deep. I regurlarly turn and vacuum the sandbed as well as replace what is lost though the monthly (or more often) vacuuming sessions with new sand every six months or so.
Gary... I have about 12 RBTA's in the tank. I gave them their own little section in the upper right hand corner where they can multiply and not bother any of the corals. It is a pretty large section that I've allotted for them. It should be spectacular in 6 months or so.
mothra.... I'm not concerned about the weight. The way that the load is distributed is that the house's foundation takes half the load and the garage floor takes the other half. The house's foundation load is neglible compared to the normal roof and floor load. When I poured the garage slab a few years ago, I poured it thicker than normal in anticipation of a tank like this someday. I'm not sure what the operating cost is... power, though, runs about $200/month.
platapus...never had a website. I'm not terribly tech savy.
xyzner....I have no idea about the total livestock cost. But, the tank upgrade cost was in the $6K -$7K range since I reused all my old equipment.
matt..... I've seen that pic before and have always liked it. I wouldn't say that my tank was inspired by it though. It seems that when most tanks get big that they expand in length and a little depth. To me, they just become larger versions of smaller tanks. I wanted to do something different that yielded a perspective that we seldom see ... even in large tanks.