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Old 08-25-2005, 04:01 PM   #1
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Metal Halide Wattage for 15 gallon tall?

i plan on keeping soft and hard corals, as well as an anenome. the manager of my LFS said even a 150 watt would probably overheat my little tank. he was also trying to tell me that metal halide bulbs need to be replaced as often as power compact? i get the feeling he was just trying to sell me power compact lighting because he doesn't have any metal halides for sale. i'll be building the canopy for a metal halide retrofit. do i need a fan?
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Old 08-25-2005, 04:14 PM   #2
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I replace my MH lights once a year. The pc I change out every 6 months.
What are the dimensions on the tank? 15 gal will heat up very quickly with MH.

If you do go MH, you will definitely need fans, and build the canopy about 8-12 inches above the water. With a tank that small, you might be able to get away with using pc depending on the species you choose. Good luck.

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Old 08-25-2005, 04:21 PM   #3
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i don't have a measuring tape. it has the base dimensions of a 10 gallon tank, but it's about 18 inches tall. i'd much rather go with metal halide, since it will be cheaper in the long run.
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Old 08-25-2005, 04:29 PM   #4
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ok..just make sure you build the canopy high enough above the water. This will help with the heat as well.

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Old 08-25-2005, 05:14 PM   #5
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any MH will be too much on that small of a tank, unless you can find a 75 watt pendant possibly. I would go with PC or T-5.
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Old 08-25-2005, 05:16 PM   #6
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so it's just the heat that's a problem, then?
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Old 08-25-2005, 05:17 PM   #7
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no....10 watts per gallon is a little stiff on most corals.
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Old 08-25-2005, 05:18 PM   #8
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They do make 75w MH pendants for aquariums now. That may work w/ just fans. FWIW a member of this site, Klam, has a 12 gal w/ a 150w DE MH but he runs a chiller. IMHO WPG is not very useful. It is only good for describing the minimum amount of light needed.
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Old 08-25-2005, 05:44 PM   #9
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hmm...okay. much conflicting advice. how's this: http://www.jlaquatics.com/phpstore/s...t_ID=pc-al2096

suitable for all corals and an anenome??
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Old 08-25-2005, 05:55 PM   #10
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That looks appropriate foe a 15 gal. I don't know much about the brand, but I know that corallife is a good brand and reliable.


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