Here's my $.02
LEDs are so new to our hobby that nobody really knows what it is going to take to support our systems. On another site a guy build a diy LED
system for his 75g tank using 48 LEDs (1watt crees 24 white and 24 blue). After a year his system is growing better and looks more intense than it did before. Some people say you need tons of LEDs to light a reef because they wont give the spread and penetration MH
, T5HO or VHO
give, others say you need a ton because of spot-lighting. Personally I don't think enough time has passed yet with people growing corals under varying LED
light to determine with any certainty what we really need. You can put together spectrum charts and spread analysis diagrams and scientifically come up with the magic number "X" of how many LEDs it will take to light a tank, but really all that is based on information we gathered from using MH
, T5HO, VHO
and other forms of light. LEDs are different.
Time will tell what works and what doesn't. The reason I have gone to LEDs is to save power, reduce heat, and reduce maintenance on my lighting system. The LED
system I put over my 54g corner reef will be simple and to some WAY under what I should have to light the tank. Like the guy with the 75g tank I'm going to do this and see what happens.
Personally I want to have a lighting system that I can run off-grid if the power goes out or I want to just go green. Can't do that as easily with MH
and the other lighting options.
Like I said, just my $.02