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Old 06-30-2010, 02:08 PM   #1
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Hi, beginner Light question on LPS?

Hi

I currently have 20 gallon high tank with 4 (24 watt t-5) 2 10,000k lights and 2 ATI Aquablue. Not sure what the 2 10000k bulbs are as I got this used. The 2 ATI bulbs are new.

I plan to get a open red brain, frogspawn and green star poly.

The question I have is how many hours should the light be on and at night what should i turn on.


thank you
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Old 06-30-2010, 02:16 PM   #2
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Replace the 10k bulbs if you don't know the age. Leave the light on for 8-9 hours. Try and get a timer(s) so you lights are on a consistent schedule. Maybe have the actinics come on 30min before the 10k, have 10k on for 7-8 hours, 10k off, actinics on for another 30min after 10k goes off, actinics off. This would give you kind of a dawn/dusk effect. Hope this helps. Welcome to AA!
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Old 06-30-2010, 02:58 PM   #3
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Thanks for the info.
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Old 06-30-2010, 03:19 PM   #4
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+1 to thom, definitely replace the 10K bulbs ASAP. If they are old, they will feed nuisance algae.
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Old 07-02-2010, 12:37 AM   #5
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Hi

Can anyone recommend me a good brand bulb. I am looking for nice growth and good for LPS. I have 2 ATI aquablue already.

thanks
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Old 07-02-2010, 12:52 AM   #6
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Might as well stick with ATI. Cant get anything better. Get two ATI Blue Plus bulbs...

My 20g has two AquaBlue Specials and two Blue Plus. Nice light blue color to the tank with all corals popping like crazy!

Matt
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Old 07-02-2010, 12:53 AM   #7
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Here is a link to a 10k bulb made by IceCap: IceCap REEFCREST 10,000K T5 Aquarium Lamps - AquaCave
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Old 07-02-2010, 01:08 AM   #8
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thanks guys

mrg02d I think that would be too much blue for me, plus my living room would be all blue.

Thominil, thanks for the link
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Old 07-02-2010, 09:26 AM   #9
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Think about where your corals come from and try to mimic that light and schedule. Most corals in the wild have about a 12 hour+ photoperiod.

I would run actinics for 12 hours and 10k for 10 hours with a 1 hour dawn/dusk period. That's what I ran when I had MH or PC lights, and is what most reefers use for a photoperiod.
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Old 07-02-2010, 12:40 PM   #10
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Hi CMor1701d

thanks for the reply, are you saying to give 1 hours atinics before 10K for 10 hours then off and then another hour atinics.

just a little confuse.
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