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Old 08-08-2007, 10:06 PM   #1
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What Corals?

What corals could you have in a 180 with 2 @ 250watt mh (20,000k)? obviously they would be low light corals but I am looking for something hardy and easy to keep. Could you do a clam if placed high in the tank? thanks
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Old 08-08-2007, 10:57 PM   #2
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You could almost do whatever you want with those lights you just need to place the corals carefully. For a tank that long you really need one more fixture but with the two you can place those corals that require high lighting directly under the lights.
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Old 08-09-2007, 12:55 AM   #3
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Thats what I was thinking, and maybe put some low light corals in the middle where the light is not as intense. Any word on a clam? thanks
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Old 08-09-2007, 07:38 AM   #4
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Clams do like strong lighting, they may need to be placed higher in your tank. What are the deminsions of your tank?
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Old 08-09-2007, 11:42 AM   #5
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It is a standard 180 (72x24x24) I was thinking that they should be ok if placed high in the tank directly under a light.
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Old 08-09-2007, 12:31 PM   #6
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I agree. A clam and pretty much any other sps would be fine if kept under the lights. Other corals would be doable as well.

You might want to look into a strip compact flourescent light or perhaps T5 to provide a little more light to the entire length of your tank? Just a suggestion.
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Old 08-09-2007, 03:10 PM   #7
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That is why I was asking the about the deminsions. Typically a MH bulb will cover 24" of area so it wouldn't hurt to add another one down the road, or do as Lindsay suggested and add a T5 or CP stip.
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Old 08-09-2007, 03:24 PM   #8
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I was going to get another mh but I have an acrylic tank and there is large brace that goes across the middle (about 18" wide) so a light in the middle would have to diffuse through the acrylic, plus I am worried about it harming the acrylic and heating the entire tank even more. With the light fixtures that I have placed about 6-7 inches above the tank the light seems to spread evenly fairly well. If a were to add T5s what bulbs would you recommend?
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Old 08-09-2007, 03:35 PM   #9
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Couple of things. Your MHs should be at least 10" off the water. Being too close is a recipe for disaster! How do you have the bulbs oriented over the tank? What kind of reflectors are you using? Can you post a pic?

I would get a combination of either 10K and Actinic or go with 50/50 bulbs.
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Old 08-09-2007, 04:23 PM   #10
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As Lindsay said if you put them up high and under the halides you should be Ok.
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