For those who are interested in these spotlight or even just for those that want to expand their knowledge on lighting. These LED spotlights are good for coverage that is roughly 1ft x 1ft. Metal Halide systems generally cover a footprint of 2ft x 2ft range before the intensity drops off quite a bit.
So in deciding how many ICE CooL.E.Ds are needed for a tank, base it on the footprint so the tank doesnt get a spotlight effect. However once the tank gets to 20"+ i would suggest something in the range of 3 spotlights for a 2ft-L x 1ft-W dimension.
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