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Old 11-25-2005, 04:19 PM   #1
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Metal halide wattage question.

I want to buy a 36 inch light fixture for my 40 gallon tank (36x18x20.)

They have two of them, one is 280W:
http://www.aquatraders.com/index.asp...ROD&ProdID=185

and one is 305W:
http://www.aquatraders.com/index.asp...PROD&ProdID=12


what do the watt differences mean? is one brighter than the other? or does one just suck up more electricity than the other.

I want to order by today.

Thanks guys.
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Old 11-25-2005, 06:35 PM   #2
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One unit has a 150w mh bulb and 2 65w pc's, the other has a 175w mh and 2 65w pc's. The difference between the 2 is the size of the mh's. I can't comment on the availablilty of 150w double ended mh bulbs, but 175 is a very common size.
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Old 11-25-2005, 07:27 PM   #3
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ok so the 175 is a safer choice?
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Old 11-25-2005, 07:33 PM   #4
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what you want to put in the tank will decide on which light is better for you. You can have TOO much lighting. Especially in a shallow tank where you cant place things low enough.
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Old 11-25-2005, 07:48 PM   #5
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I see. well, i want sabae anemoe and long tentacle anemone. is this too much lighting for them?
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Old 11-25-2005, 08:03 PM   #6
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someone else will have to field that question. I have little personal experience with those anemone. I think 7 wpg is probably extreme, but I am not really sure.
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Old 11-25-2005, 08:10 PM   #7
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Thanks.

I ordered it.... I hope i'm not doin any over kill here.
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Old 11-25-2005, 08:14 PM   #8
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I keep a Sebae and 3 BTA's in my tank-55gal 2x250w MH/2x110w VHO o3. WPG is useless when dealing w MH lamps IME. I had the Sebae under just VHO's(2x75w) in a 29 gal. for over a year, and I can say it is much happier/healthier looking under these MH. Sebae's are high light anemones. I've had my current set up going for 1 year next month and could not be happier w/ the results.
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Old 11-25-2005, 08:48 PM   #9
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So what your saying is that this light is sufficient enough to keep sabae anemone?
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Old 11-25-2005, 08:50 PM   #10
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Yes, definitely not too much just be sure proper light acclimation procedures are followed. I think you'll be very happy w/ it.
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