Eco-Lamps LED Chart 

Table above summarizes some the parameters that are useful in evaluating the light output, power input, and peak light output. What is most interesting here is to note that other than the metal halide, the peak outputs of T5 and LED combinations used are roughly the same. The power consumption is significantly different (almost 50%) between the Eco-Lamps KR92 and Solaris I5 series, and ATI Powermodule. When faced with such data there is a tendency to jump to conclusions that a 250W metal halide is equivalent to one of these LED fixtures.

From Advanced Aquarist’s Online Magazine Feature Article: Quantitative Comparison of Reef Aquarium Lighting Technologies: Metal Halide, T5 Fluorescent and LED

http://www.advancedaquarist.com/2010/2/aafeature2

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