Its true that many people indicate that the overall light with LED's doesn't appear as bright but the corals tell us that they are getting a lot more from a lot less with the LED's. I have a DIY fixture over my main display and at 40% during peak times I'm bleaching a lot of my stuff. I don't have my frag tank up yet but the IT2040 I have has the LEDS more tightly packed than my DIY fixture so I imagine I'll be having the same struggle with it being too much unless I cut it back at first.
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Mark...
290g Peninsula Display, 425g total volume. Setup Jan 2013.
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