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Old 03-06-2004, 09:24 PM   #1
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lighting on a new 75

I'm getting a new 75 gal with overflow tomarrow to upgrade my 20 gal.
I have a 24" jalli PC with 1 actinic 03 and 10k light. I will be incorportating this over to my 75 ( all actinics 03's ) My question is a single 400w MH 10k light enough for the whole tank or should I get more.

Another question same thread... what is a used 400w MH setup worth roughly ballast and new bulb?

Tank dimentions are 48*18*20

Thanks in advance
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Old 03-06-2004, 09:37 PM   #2
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You need 1 MH for every 2 ft of tank length so you would need to add 1 more.
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Old 03-06-2004, 10:06 PM   #3
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Although you can use 400 watt bulbs, I would probably go with 250's. I think you'll be able to keep anything you wanted to under a 2x250w setup and you'll have a bit less heat to contend with. Not really sure about used prices...check Ebay. I would suggest electronic ballasts if you can get them.
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Old 03-06-2004, 10:19 PM   #4
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I have two 250 watt 10k and two 55 watt actnic03 ..

I want to switch to hamilton 14 k bulbs to make it a little more blue.


Good Luck Dewey
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Old 03-09-2004, 06:43 PM   #5
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At what height should I mount the lights when I'm starting out?
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Old 03-09-2004, 09:31 PM   #6
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At what height should I mount the lights when I'm starting out?
They should be mounted 6" - 8" off the water's surface.
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