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Old 05-24-2012, 08:29 AM
RuGlu6 RuGlu6 is offline
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Default What is the best 20K DE bulb for SPS reef tank
Just wondering what is the best 20K bulb out there for SPS corals?
I got 2x250W DE HQI and it looks like its too much light for 36"x18"x24" 65Gal tank, Decided to go higher K color, so what 20K bulbs do you guys think i should get?
Thx
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Old 05-24-2012, 01:05 PM
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Have you compared the values on Sanjay's site? http://www.manhattanreefs.com/lighting
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Old 05-24-2012, 01:39 PM
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What issue are you having? I ran 2 x 400w 10k over a 75g for years, never an issue with too much light..
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Old 05-24-2012, 02:40 PM
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Have you tried phoenix 14Ks yet?
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Old 05-24-2012, 08:48 PM
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Quote:
Originally Posted by whatcaneyedo View Post
Have you compared the values on Sanjay's site? http://www.manhattanreefs.com/lighting
Thx for that, i did go there however it does not give me exactly what i need in terms of coral reaction/growth as well as visual appearance/color only plots. Also he doesn't have my ballasts.
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Old 05-24-2012, 08:52 PM
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Might be best to change the ballasts for 150W versions instead, might even be able to find someone that will trade you straight up. Might be a better alternative since you may not find a huge difference from switching 14K to 20K on the halides and vise-versa on the T5s.
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Old 08-19-2012, 03:12 AM
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I used geissmenn and aquamedic. Both were great. But prefered the geissmenn
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Old 08-20-2012, 06:01 PM
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Xm 20k are blue aswell for the single ended, I am not sure if they come in double ended.... It's been so long since using mh I forgot... You may wanna call OA because they have a sale on bulbs ATM and I know they have some nice bluer double ended bulbs....

Good luck!
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Old 05-24-2012, 04:40 PM
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I have 14k Phoenix bulbs supplemented with t5 actinics and have great growth. 20k might be too blue.
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Old 05-24-2012, 05:19 PM
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I have 2 x 250w 14k phoenix bulbs over a 40g breeder tank and get decent growth.
They sit low too. On the tank rim. New corals do need to be acclimated to that much direct light usually.
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