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Old 12-12-2011, 12:27 AM   #1
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3 Metal halides on 8 foot tank?

I found a good deal on 3 150 watt metal halide pendants. I'm just growing some soft corals. The tank is 8 feet long. Is 3 enough or would I need 4?
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Old 12-12-2011, 12:37 AM   #2
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sure if you just want softies then that will work, but personally i think you're limiting yourself to only those,when in the future you might want to house more then just leathers and low lights
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Old 12-12-2011, 12:53 AM   #3
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Actually I have 2 coralife lunar t5 fixtures right now. 4 bulbs 48 inch ea. Just thought metal halides where stronger. Or at least brighter.
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Old 12-12-2011, 11:59 AM   #4
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Anybody else got an opinion?
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Old 12-12-2011, 04:01 PM   #5
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I think 3 is enough with for a 6ft tank, but not enough for an 8ft tank. But honestly, I think you can strategically place your corals around the 3 halides.

Are the halides going to be complimented with other lights like T5's, or is that all the light you plan to have? Because for me, I like to have light along the entire length of the tank.
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Old 12-12-2011, 05:50 PM   #6
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the T5s with a quality lamp will probably penetrate better then the 150s will
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Old 12-12-2011, 05:52 PM   #7
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i would stick with the 4 bulb t5's. you definitely need 4 halides for an 8 foot tank, and like leo said, the 4 lamp fixture most likely puts out more light.
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Old 12-12-2011, 06:17 PM   #8
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Old 12-12-2011, 09:39 PM   #9
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How about 250 watt halides? Just don't feel that the t5 are bright enough. The corals on the bottom of the tank aren't doing super well.
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Old 12-12-2011, 09:57 PM   #10
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what corals do you have at the bottom of the tank? what kind of flow do you have there?
how deep is the tank top to bottom?
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