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jjmcat
04/30/2006, 05:41 PM
Is it possible to use a phillips 4000k hallide bulb with 4 uri super actinic bulbs with no ill effects. The bulb are new and they were free to me.Will the coral grow or will the 4000k damage the coral in anyway.Right now with all the above bulbs in it looks about like 14k.So looks arent the question.

Ti
04/30/2006, 06:56 PM
try it

jjmcat
04/30/2006, 09:36 PM
bump

jjmcat
05/01/2006, 09:40 AM
bump

jjmcat
05/01/2006, 12:17 PM
Can i use these bulbs?

GoldStripe
05/01/2006, 12:22 PM
The kelvin may be too low @ 4k but I'm not positive on that. I know that arguably the best bulb for growth are the 6500k Iwasaki's but they are too yellow for most of us. You need to try and find a kelvin chart that shows what color temp is needed for photosynthesis and go from there. JMO of course

pavster
05/01/2006, 01:56 PM
You actually want to see the spectrum chart. If the spectrum is close to sun's it should be good. If it has a giant green or yellow spike, then it's bad.

GoldStripe
05/01/2006, 01:58 PM
<a href=showthread.php?s=&postid=7283926#post7283926 target=_blank>Originally posted</a> by pavster
You actually want to see the spectrum chart. If the spectrum is close to sun's it should be good. If it has a giant green or yellow spike, then it's bad.

That's what was trying to think of..."spectrum". I couldn't think of that word to save my life. Thanks!

jjmcat
05/01/2006, 04:07 PM
anyone know a good websit for that info.

pavster
05/01/2006, 04:16 PM
The problem is the less popular the bulb, the less info you will find on it. The manufacturer might have some data, but you never know whether it's honest and correct without independent verification.

On the other hand, if you like the looks, and it seems bright, you might as well stick with it. No MH setup is perfect, so who is to say that your setup is more imperfect than some other more traditional setup.

-pavel