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post #5 of (permalink) Old 01-20-2013, 05:08 PM
Planted Tank Guru
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Join Date: Dec 2005
Location: Sacramento, CA
Posts: 19,681 is a two bulb light, with the bulbs separated by about 4 inches, and with separate switches for the two bulb, so you can run either bulb or both bulbs. I would consider hanging the light about 6-8 inches above the top of the tank, to reduce the light intensity down into the low light range, with both bulbs on, and to reduce the tendency for the plants to grow towards the middle of the tank to get under the light.

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