The Planted Tank Forum - View Single Post - Why not more metal halide?
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Old 10-13-2012, 04:51 AM   #3
willknowitall
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yup not good for small tanks
you need at least 18 inch from front to back. 24 inch or wider is ideal or your just thoughing to much light on the glass

also if you live in a hot climate they give off too much heat
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