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Old 09-07-2006, 08:41 PM   #1
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lighting question ...

what would be ideal over an 85 gallon reef tank?, a 250 watt or 400 watt halide? the tank is 3' x 2.5' (18" deep) so only one would really be neccessary. also what kelvin rating would work? I know its a personal preferance however some other peoples opinions would be nice, TIA
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Old 09-07-2006, 08:48 PM   #2
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I think a 250 would be sufficient, as that tank is not very deep. If you arent' using any suplemental actinics, i would use a 14K to get a little blue, but not too much.
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Old 09-07-2006, 10:27 PM   #3
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I think VHO`s would be nice but that`s not the question is it?
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Old 09-07-2006, 11:21 PM   #4
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I agree, I would go with the 250w @ 14k. I'm actually going to get dual 250w @ 14k for my upcoming 75gal. Check this site out if you want to go retrofit:

www.catalinaaquarium.com
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Old 09-08-2006, 11:15 AM   #5
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Thanks,

Quote:
I think VHO`s would be nice but that`s not the question is it?
I've seen pictures of VHO's and they do look effective, however it's not really an option, they're not available anywhere in the UK (or i've never seen them at least), also, because of the shape of the tank I would need quite a few which means costly replacments twice a year plus more fluorescent starters. The 'shimmering' effect on the sand given by halides also cannot be matched by fluorescent IMO.

I think 14000k would be perfect but would 250w be enough by itself?
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Old 09-08-2006, 12:13 PM   #6
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I have 250w 14k and its a good amount of blue for me
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Old 09-08-2006, 01:50 PM   #7
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does the wpg rule actually count for anything? if it does i get les than 3 wpg from a 250w halide?!
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Old 09-08-2006, 09:25 PM   #8
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Not really. its more of the intensity that you are looking for. You'll be fine with that lighting. You want about one metal halide for every two feet of tank space. At least thats what I've heard. I think 250w is good up to 3 feet deep as well.
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Old 09-08-2006, 10:09 PM   #9
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Not really. its more of the intensity that you are looking for. You'll be fine with that lighting. You want about one metal halide for every two feet of tank space. At least thats what I've heard. I think 250w is good up to 3 feet deep as well.
That is what I use also is the two foot rule. Works good for me. With your tank depth a 250w 14k would work well unless you want keep clams on the bottom then I would go with the 400w. With your tank width you may get some dim spots on the sides.
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Old 09-08-2006, 10:37 PM   #10
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Thanks for the replies, having a couple dim spots either side is probably a better option than having to replace two bulbs. so I will go with a 14k 250w. thanks
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