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Old 06-20-2011, 04:26 PM   #1
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Exclamation Lighting Question

I have a 20 gallon aquarium and it is a single tube floresent fixture. I am wondering what watt lightbulb I would need for my tank to grow plants.
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Old 06-20-2011, 04:59 PM   #2
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Its not watts you want it's the color temp. You want a bulb that is 6500k or 10000k. Plants tend to grow best under a 6500k light. Any lfs will have them. Just make sure you get the right length and type(t5,t8,t12)
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Old 06-20-2011, 05:39 PM   #3
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Ok thank you for your advice
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Old 06-20-2011, 05:47 PM   #4
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I have a t5 bulb that came with the tank but im not to sure about bulbs yet because I am still new to this. Im not sure if I even need to buy a new bulb
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Old 06-20-2011, 05:57 PM   #5
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Ok I found a current USA true lumen HO T-5 lamp 18 watt 12,000 day light. Would that be good?
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Old 06-20-2011, 10:02 PM   #6
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Yeah but keep in mind the 12000k will have a blue tint to it. If I were you I would really look for a 6500k anything more and plants will tend not to grow so well. 10000k is about the max I would go
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Old 06-20-2011, 10:04 PM   #7
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Ok thank you..ill keep looking...I am having a hard time finding a 18 inch bulb like that
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