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Old 02-11-2013, 08:15 PM   #11
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Originally Posted by Madcrazyroyboy View Post
Would it be better to have say 3 white and 1 atinic, 3 atinics and 1 white, or 2 white and 2 atinic? (Based on a 4 bulb fixture). I'm very curious.
You are asking these questions and I gave you the answer to them- It doesn't matter which lamps you use as long as they provide enough PAR. The colors are for aesthetics, friend.
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Old 02-11-2013, 08:18 PM   #12
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What about MH lights? A lot of people don't have atinics with them? Is it more wider spectrum?
MH bulbs are the most space efficient bulbs. They pack an amazing amount of punch in a tiny area. Plus they've been around for a long time.
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Old 02-11-2013, 10:19 PM   #13
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I never replaced my atinics after they burned out So been running on 2x 175 watt MH on a 90 gallon tank for a year now. I have not experienced any change in the system.
I have range of corals from soft to sps in my Tank plus 5 BTA's. the tank is 2.5 years old.

So I agree with MR. X.
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Old 02-12-2013, 09:03 PM   #14
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Basically as long as there's enough par, no need for atinics unless you want better looking corals. Color pop for our enjoyment. What about how deep will lights penetrate?
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Old 02-12-2013, 10:35 PM   #15
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Can anyone tell what does PAR stands for?
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Old 02-12-2013, 10:48 PM   #16
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http://en.m.wikipedia.org/wiki/Parab...eflector_light
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Old 02-12-2013, 11:51 PM   #17
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If it's the same thing these guys are referring to, then the number of PAR means increasing the intensity of light which I don't agree. Corals that are found on deeper water can only get a certain amount of light while those in the shallow can get those higher intensity. Therefore, the kind of light you pick depends on what type of coral your have.
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Old 02-13-2013, 03:11 AM   #18
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This is more for a light expert. But all opinions are wanted as well. A guy I work with has a sps dominate tank and has 6 bulbs but all but the one is 12000k light by ati and just 1 atinic. His tank looks great and has been doing so for 2 years with explosive growth. Do you guys think atinic is 100% needed for sps? Or is it more for looks? Let me know what everyone thinks.
I think this answers your question

What is actinic lighting? - Yahoo! Answers
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Old 02-13-2013, 08:30 PM   #19
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Originally Posted by jeffaquarius View Post
If it's the same thing these guys are referring to, then the number of PAR means increasing the intensity of light which I don't agree. Corals that are found on deeper water can only get a certain amount of light while those in the shallow can get those higher intensity. Therefore, the kind of light you pick depends on what type of coral your have.
What are you talking about?
The question was, does the OP need actinic light. The answer is no. All you need is the sufficient PAR to keep your photosynthetic creatures alive.
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Old 02-15-2013, 03:38 PM   #20
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I think this answers your question

What is actinic lighting? - Yahoo! Answers
+1 for jeff
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