Originally Posted by carey
It would be a good fixture for now in my opinion. You can, like mentioned place the higher light demanding corals towards the top. I have a few arcoporas in my 125g and I keep them up top, even though I'm running a 12 bulb system.
If you were wanting more SPS
and/or clams and nems then I would still look at upgrading the fixture in the future. It all depends on your budget.
here is an excellent light that just came on sale today, very pricey but what I would put over my 55g if i was going back to corals in the tank
48 Inch 8x54W Sunlight Supply Tek Elite Light High Output Fluorescent Lighting Fixture
It's just an example, but you could grow ANYTHING with that light. LOL
that 8 lamp will melt any coral other then SPS
in a 55g. even a 6 lamp is pushing it on that there.
the general rule of thumb is one individually reflected T5HO lamp per every 3-5 inches of aquarium width. T5s are able to penetrate a 30inch deep tank and have a variaty of corals from top to bottom.
i have a 4x24 watt fixture over my 26g and i've only kept 2 lamps on as i haven't fully got a reef system setup, and i have a neon green polyp that started to grow out of nowhere and on 2 lamps has grown from a quarter of an inch to almost a full inch just on two 24watts at a depth of 18 inches