Major improvements.
1. Much larger tank. Currently have a 55 and would like at least a 180 or so. I'd be looking for a tank that's more wide (I'd rather have a tank 6' long and 2' wide than 8' long and 16" wide). I think this would give me more options for aquascaping a reef.
2. Definitely metal halide lighting, which would then allow me to get more sps corals (I'd love to have a tank of acropora and other sps like
this
3. Have a sump / refugium. Theoretically I'd turn my 55 into a sump/refugium, but maybe would get a larger size to go along with the huge main tank.
4. Closed loop system for circulation. Definitely. I have come to despise power heads and the suction cups that (only when I'm home) keep them attached to the tank glass. I'm sick of coming home to find a power head laying in sand and creating a whole dune system in my tank. Or worse, finding one has fallen into my colt coral and sucked a whole chunk through the intake screen (requiring me to cut the coral to free it). Really, really hate it. I mean, really...hate it.
5. Additional fish that I can't get now (due to tank size and me having to move in about a year, and also because they're wayyyyy too expensive) but would love to have.
Chevron tang ,
mystery wrasse , and a
helfrichi firefish.
Also would love to have a mandarin goby, and with my mega-system I would be able to sustain one.
6. Calcium reactor. I dose b-ionic regularly and add kalk for top-off water, and I still struggle with maintaining calcium levels in my current set up (beginning to think it's the fault of instant ocean salt mix, which I'm looking into changing).
7. Chiller. Since I'll be living somewhere in the carribean (this is a day-dreaming thread, right), I'm probably going to need one.