It's been almost two years, and I consider everything to be the same essential "tank" though about the only bit that's the same is the corals
It was a 3 gallon plastic POS (Aquatic Gardens) which I retrofitted with 2X13w 50/50 bookworms. Deep black sand bed. Aquaclear HOB. 25 watt heater.
Now, it's a 5.5 AGA with 2X24w 12K pcs, smaller white sand bed, and a microjet 450.
Reasons for switching:
**the black sand, which looked sexy at first, started just looking dark and dirty to me.
**the coraline algae was harder than the plastic tank. I literally could not scrape it off without peeling off strings of plastic. Never. Again. Augh. I was down to probably 60% visibility before I made the switch.
**heater bust and almost cooked the tank. Now, no more heaters period. I have one on hand in case it gets really cold, but between the pumps and the lighting, the tank stays warm enough in a climate controlled room.
**Aquaclear HOB bust. I replaced it with an aquaclear powerhead. Powerhead bust. Oh look, a theme! I put my microjet ph in to keep the current going but I'm toying with going back to a HOB...I like the current patterns better believe it or not, and it agitates the surface. And it's not as ugly.
**LR, though pretty, was about three small boulder-shaped pieces with no real sites to place corals. It was barely stackable, but I "settled" for it when I was impatient to start and payed for it later. I let it encrust with GSP and then ditched it for ONE piece of LR with loads of nooks and crannies. No aquascaping, nothing to knock over, and a much cleaner look. One of the best decisions I ever made.
**GSP and some mushrooms were growing rampantly and were difficult to control. Now I'm going to keep things on the sand bed for a while to see how invasive they are...if they turn out to be fast-growing, I have room for a rubble island where they can be isolated from the main rockwork.
After all the chaos of loosing that established but ugly black sand bed in the old tank, and putting in cycled-but-still-new LR, I've let the tank sit for a month or two to stabilize itself. I was going to shoehorn it all into a spare 2.5 but at the last minute my LFS owner mentioned he had "these lights" on sale, and, well, the extra room of a 5.5 was too appealing to pass up. So now I have a spare 2.5 in my bedroom as a rubble and prop tank.
Current things I may change:
**Get a HOB instead of the powerhead.
**Get a background. I was playing around with the clean look of clear glass, but I'm not sure if it's a keeper.
**Get a hood and trim made. Yes. I have no hood. Just the lights and a reflector
**Different bulb spectrum. I've got 2 12ks and the tank looks like someone murdered a smurf in there. I've got a 10k and a 50/50 in the mail.
Of course, compared to the 3 gal, now it almost looks TOO big and bare, and I'm wondering if I could turn my liverock on it's side and stand it in one of those AGA 4 gallon tanks...hmm...