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Old 08-03-2009, 02:51 PM   #41
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The inside of the tank is going to be about 78-77 inches long. the middle brace shouldn't be too wide. so a 36" fixture should work nicely
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Old 08-03-2009, 02:56 PM   #42
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Quote:
Originally Posted by Etunes View Post
OK, answer me this. Whats the difference between MH and T5s? Do they allow you to keep different corals or something? Are they stronger light?
Metal Halides > all imo

2 250w metal halides 10-14k + 2 48" actinic fluorescents would allow you to keep a large variety.
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Old 08-03-2009, 02:57 PM   #43
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Quote:
Originally Posted by Etunes View Post
OK, answer me this. Whats the difference between MH and T5s? Do they allow you to keep different corals or something? Are they stronger light?
As far as I know, T5's have the same output but without the heat. I don;t know too much so don't take my word for it. :]
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Old 08-03-2009, 03:00 PM   #44
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I like the way that sounds speakerman, but those are long enough that I wouldn't be able to put two fixtures on it. Do they come smaller?
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Old 08-03-2009, 03:26 PM   #45
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two metal halide retro-fit 250w lights, one centered over each section of your tank.

You can get single T12 fluorescent fixtures for 15 bucks from lowes or home depot, and the actinic light for like 20 bucks online or 45 bucks from petsmart. So use two single fixtures, one light in front, one in back.

or you can do 72" actinics but that may prove to be a lot more costly and harder to get fixtures/lights
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Old 08-03-2009, 03:28 PM   #46
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I think one giant fixture would cost more in bulbs in the long run. I'll check home depot for those. Thanks!
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Old 08-03-2009, 03:29 PM   #47
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yah know, you might need to use a pendant fixture.
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Old 08-03-2009, 03:33 PM   #48
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Hanging it would be an easy way to get it above the tank... but would a pendant fixture be large enough? The look awfully small.
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Old 08-03-2009, 03:42 PM   #49
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they are meant to be able to put light in a large amount of area. im not sure, but you might want to get two because of the size of your tank.

http://www.aquacave.com/detail.aspx?ID=2026
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Old 08-03-2009, 03:46 PM   #50
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I'm always impressed with reflectivity of lights. That's 15" and probably would light my tank extremely well. In looking at them I got hung up on the fact that it's only 15"
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Old 08-03-2009, 03:48 PM   #51
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yeah regular lights are usually focused on getting the light down, but pendant MH are focused on getting the light down and out if that makes sense.
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Old 08-03-2009, 03:52 PM   #52
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Yup. Makes complete sense. I'll look around home depot and my lfs and see what they think. Once I get done with the top (i'll probably end up jigging out two squares on the large piece.) Pendant lighting would actually be able to put light under the frame on the top, correct?
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Old 08-03-2009, 03:56 PM   #53
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should be able too, but i dont really understand what it looks like so im guessing by what i understand you told us. would it be possible to post a picture of what the hood is going to look like?
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Old 08-03-2009, 03:59 PM   #54
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2 MH 250w 14k bulbs $50
2 MH reflector/sockets/ 250w ballasts $300
2 48" fixtures $30
2 48" actinic bulbs $34
+a bit of DIY





2pcs 250W 250 watt 14000K Metal Halide Aquarium Bulb - eBay (item 290335474367 end time Aug-29-09 14:00:13 PDT)

250W Metal Halide/MH Retrofit Ballast/Mogul Reflector - eBay (item 300268090005 end time Aug-18-09 05:49:14 PDT)

MARINE-GLO ACTINIC AQUARIUM SALTWATER BULB T8 40W 48" - eBay (item 260428441029 end time Aug-12-09 17:24:03 PDT)
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Old 08-03-2009, 04:07 PM   #55
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This is as close as I can get. I found a picture of someone else's plywood build through google.


The top of a plywood tank typically has a thick brace in the middle to suppot the weight and pressure in the tank.

Rather than just nailing in a tiny piece of plywood, i'm going to use an entire sheet for extra stability. The sheet will have large sections cut out of it and form the same basic thing. For better explanation, I have a lovely piece of MS Paint artwork for you. Assume the two rectangles are even and the middle bar is centered.

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Old 08-03-2009, 04:08 PM   #56
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Thanks Speakerman!
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Old 08-03-2009, 04:10 PM   #57
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I use a 14k 175w metal halide and 1 40w actinic on my 75g reef IP. Seems like plenty of light, although my cross brace is glass.

I may put 1 more 40w actinic, but after that I'm not changing the lights at all.
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Old 08-03-2009, 04:13 PM   #58
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That's good to hear. I think two of those would be completely sufficient for my needs. I'll play with the idea. Seems like another trip to home depot is in my future
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Old 08-03-2009, 04:14 PM   #59
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hmm make the openings big and the pendant should get the light down there
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Old 08-03-2009, 04:15 PM   #60
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I figured with only an inch or two of a border, and a decent size frame, they should be large enough, yet that extra inch would improve strength more than just a cross beam
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