Not enough 1 watt LED density unless it is a pretty small tank. Each watt of most modern high power LED emitters, even ones with lenses, averages light output equivalent to better than 3 to 1 over a MH. For instance, a fixture with 100 high performance 1 watt LEDs would put out about 300 watts worth of equivalent MH if looking at a PAR meter at 24."
If the fixture uses 2 watt or 3 watt derated to 2.5 watts LEDs, the math works the same. I have written and been attacked quite a bit over this topic even after posting video of growing soft and hard coral over the past year. Look at my previous posts for links and PAR testing of a brand of inexpensive lights that will actually replace or supplement MH or T5 lighting. This has been my experience as I simply didn't want to spend the kind of costs associated with most fixtures (that actually grew coral) I was finding last year when I switched over from MH. There are a lot of junk, low output fixtures out there, so look for YouTube videos or forum reviews on the topic. Apolloreefled.com has some good info.
For a smaller tank your Marineland will probably be okay. Keep us posted.
