In a 48" tank with two bulbs you should mount then front to back to get the maximum light distrubution. also you should shift the base of the bulbs as far back as you can as more light is thrown forward from the bulb than back wards.
a different case would be in a tank like mine where it is only 3 feet long and two foot wide I have them mounted like you do in that case as there is only 1 foot between the tips of the bulbs.
Steve
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06-15-2006, 04:09 AM
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