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Old 07-12-2006, 11:33 PM   #1
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20K MH bulb instead of Atinic PC

Hey all,

I am planning a tank upgrade and I saw a MH light fixture that uses a 20H MH bulb instead of the usual atinic PC.

Has anyone used them? Is it worth the money or should i stick with a standard MH/PC fixture.

Here is the link.



Thanks

John

http://www.marinedepot.com/aquarium_...es.asp?CartId=
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Old 07-13-2006, 01:07 PM   #2
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Some people like them. I personally prefer the mixed MH/Florcent look. MH also typically puts out more heat than CF or T5 lighting.
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Old 07-13-2006, 02:22 PM   #3
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yeah,

and MF/PC lights are cheaper.

Thanks
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60gal reef in progress
75lbs Live Rock
40lbs Live Rock
AquaC Remora Protein Skimmer
Marineland penguin HOB Filter
4x65w PCF

FISH
1 - Percula, 1 - Blue-Yellowtail Damsel, 3 - Green reef Chromis

Inverts
Rose Annenome; Anchor Coral
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Old 07-13-2006, 02:48 PM   #4
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The 20k is a bluer color. It is not going to compensate for lack of actinic. You will not see the flourescing that you would as if you just had the actinics on (which is what some people do for morning and evening). The PC and T-5 will not have the intensity that MH does. You have to decide what it is you want to do and then pick the lighting that is the most appropriate.
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Old 07-13-2006, 04:46 PM   #5
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Quote:
You have to decide what it is you want to do and then pick the lighting that is the most appropriate
Thansk for the advise.

I am upgrading to a larger system and I want to be able to keep clams and sps corals. The dims of the new tank are 48x18x20, so I am definately looking for intensity.

I guess what I want is optimum health of the system and I wasn't sure if the 20K MH, while more intence, would provide the correct spectrum of "blue" light needed. Just seems like most people use MH/PC lighting and I wasn't sure why if you can run 20K MH's.

Thanks

John
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60gal reef in progress
75lbs Live Rock
40lbs Live Rock
AquaC Remora Protein Skimmer
Marineland penguin HOB Filter
4x65w PCF

FISH
1 - Percula, 1 - Blue-Yellowtail Damsel, 3 - Green reef Chromis

Inverts
Rose Annenome; Anchor Coral
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