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Old 05-29-2010, 04:57 PM   #1
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Lighting question (actinics)

I currently have a 96 watt PC, and a 42 (total watts 21x2) T5 light. How do I go about getting that blueish tint to my tank. I believe actinics are what I need and I currently have one in my T5 set-up. Do I need to get another actinic light to replace the 10k bulb I have ?? If so, any suggestions ??
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Old 05-29-2010, 06:08 PM   #2
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Drop the actinics and get some ATI Blue Plus bulbs. They are a strong blue. Actinics will cast a purple color. The more blue bulbs, the bluer the tank gets.

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Old 05-29-2010, 06:13 PM   #3
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Ok thanks. I take it these are T5 bulbs and I should put 2 T5s in my lighting system ?
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Old 05-29-2010, 06:21 PM   #4
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Yeap, t5 bulbs. Lots of PAR too. What color bulbs are you using right now?
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Old 05-29-2010, 06:29 PM   #5
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Its like a light-blueish color. I'm not sure how I find out what color it is now, but the bulb says actinic. I thought actinic was a blueish color by default.
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Old 05-29-2010, 06:44 PM   #6
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You probably have 460nm bulbs then. They are called actinic bulbs, but I believe true actinics peak at 420nm or less. Both will cause corals to fluoresce, but the 460nm will output much more PAR and give a more blue look to the tank. Which type do you have for the t5 bulbs? If these blue bulbs ARE the t5 bulbs, then dont buy the Blue Plus. Youll need to then swap that PC lighting out for something more blue. (10,000k is a white with yellow and will be hard to drown out without more blue bulbs).

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Old 05-29-2010, 07:05 PM   #7
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I'll go home and check to see what lights I have for my fixtures. I'll report these tomorrow.
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Old 05-29-2010, 07:34 PM   #8
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Matt has you on the correct path if you are adding to your 10k PC with T5 supplemental lgihting.

Sunlight is around 5500k - 6500k. A 10k is white with a slight blue tint, 14k is more blue, 20k is bluer and actinic (420nm-435nm) is 50k.

Are you going for looks, coral growth, some combination?
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Old 05-29-2010, 07:38 PM   #9
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Well what i'm looking at is some xenias (had em before, they grow like weeds but look awesome) some zoo's or polyps and maybe even a hammer or frogspawn coral. Is what I have now good enough for all of these ??
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Old 05-29-2010, 07:39 PM   #10
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Sorry, but maybe even a toadstool also..
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