I was told this is perfect for a reef tank, but I don't know if it's considered low medium or high lighting. It's a 48" marquis dual t5. This is all the info it really has beyond that
Honestly I don't know a whole lot about reeling as I'm new to it but I think it would somewhat depend on the bulbs you use. From what I have seen most people tend to use at least quads on a 55g. I've seen a lot of 6 tube fixtures with additional LED or MH lighting too. What corals are you wanting to grow? I'd imagine you'd be able to support soft corals.It's a standard 55 gallon.