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Old 12-14-2002, 09:23 PM   #1
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lighting question

I have a 30 gallon hex tank that I want to put a metal halide pendant over. I just want to be able to add a few corals. Do I need any other lighting or will this cover it?
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Old 12-14-2002, 10:33 PM   #2
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That depends on wat color temp bulb and whose pendant your going with...

I'd say with most 12000K bulbs and higher Kelvin temp, there is no need for more lighting, you'll get enough peaking between 400-500nm that your corals will be happy and healthy. What wattage are you going with and how deep is the tank?
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Old 12-15-2002, 04:16 AM   #3
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that would be my other question

My tank is 22" deep. What wattage etc. would someone recommend? Seems like the more I read the more confusing it gets. Just want to do it right the first time.
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Old 12-15-2002, 10:44 AM   #4
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IMO, you should get a 250watt 20000k MH bulb. Tim.
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Old 12-15-2002, 10:44 AM   #5
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Well your two obvious choices are 175W or 250W. Now the ? would be what do you want to keep in the tank?

What types of corals. Do you have some in mind that you would defiantly want?
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Old 12-16-2002, 01:15 AM   #6
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I am mainly interested in mushrooms and polyps of some kind. Not a lot to choose from around here. Nearest saltwater fish store is 75 miles away with the next on over 150. I may have to get them online. Anyone had any luck with corals buying online and if so where would you recommend?
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Old 12-16-2002, 09:56 PM   #7
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Power compacts would do just fine for shrooms and polyps. However, if you go with mh. Ive heard of people having a tough time with 12000k bulbs. It seems that acropora doesnt do well under bulbs with that high of a kelvin temp. You might add one pendant with a 10,000k or 6500k bulb and put a single bulb NO fixture with one actnic bulb in in JMO.
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Old 12-18-2002, 12:21 PM   #8
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If you're going MH then a 175 is perfect for your hex. 250's are great because of the wider variety of bulbs and it's a lot more light for not much more $$. PC's will definately be OK for Mushrooms and Polyps, but very few people can stop there

If you're not in a hurry, I would suggest waiting for Spring and buying coral frags from fellow hobbiests. This has three BIG advantages.

1 - The Coral is KNOWN to be able to thrive in a captive environment.
2 - Is does no damage to the natural reefs.
3 - It's a LOT cheaper

I would like to remind Reefrunner what the Kelvin temp really means, but that's another thread I believe
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Old 12-18-2002, 12:27 PM   #9
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I will venture to say that Kelvin is The color temp of light. 20000k is closer to the color temp of ultraviolet if I'm not mistaking. Tim.
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