To get enough lighting to match my compacts, I needed 2 of the true lumen led's. I bought the blue/white mix and the 12k white. They do a great job on my 75 gallon tank. I have fish and coral. The hammerhead coral has taken off since installing them. The mushroom coral has retracted some (which I wanted). Tough to say how all of the different corals will react, but for me it was a good match. The size is unbelievable. Going from a large compact fluorescent to two thin strips an inch and a half wide is a great bonus. No more CF bulb replacement either.
This is an expensive product, but several times per day more than half of the LED lights go off.
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