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11/16/2010, 09:56 PM
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#1 |
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Registered Member
Join Date: Mar 2010
Posts: 204
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Quick MH question
I have a 175w 14k Ushio MH hanging above my 40B - I am using this for lighting for my frag shelf, I have 4 39w T5s as well. Currently I am running the MH for only 4 hrs and plan on bumping it up to 6hrs over the next mth or so. How high over my tank should I hang the MH?
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11/16/2010, 10:00 PM
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#2 |
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Registered Member
Join Date: Mar 2010
Posts: 204
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Currently under the MH I have a few SPS frags - the shelf is about 12inches from the water line
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11/17/2010, 01:40 AM
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#3 |
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Registered Member
Join Date: Aug 2008
Location: Valdosta, GA
Posts: 624
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I adjust the height of my fixtures based on the coverage I am trying to get with the light.
That said, there are a lot of factors that help determine hanging height, like heat transfer, coverage, intensity, etc. Realistically, hang it at least 6 inches above the water, that may help reduce some heat transfer, help avoid some splashing, which is rather annoying to clean off of the glass, and gives you a little room to feed without having to move it. Hope this helps, Landon
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University: Biology M.S. - 2012, M.D. 2015 Tanks: (2) 28g Nanocube 150w MH HQI - 18w Actinic CF 29g Blue Spotted Jawfish Tank |
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