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Old 03-08-2013, 04:55 AM   #1 
finnfinnfriend
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Why don't bettas need UVB?

Betta fish are diurnal, and most diurnal animals need some type of UVB light during the day, so why don't bettas need it too?
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Old 03-08-2013, 02:26 PM   #2 
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Does anyone know?
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Old 03-08-2013, 02:59 PM   #3 
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They don't need any special lighting, do they?
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Old 03-08-2013, 03:56 PM   #4 
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Just from personal experience I'd say that they don't seem to, but then, I've never tried using a UV light with my tank.
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Old 03-08-2013, 04:17 PM   #5 
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I think it's because regular lights work with them. *Is guessing*
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Old 03-08-2013, 05:36 PM   #6 
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I think uvb gets blocked from water...That would make sense because it wouldn't really get to them anyway...Does anyone know if that is true?
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Old 03-08-2013, 05:43 PM   #7 
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Does it? I thought you could still get sunburnt through water.
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Old 03-08-2013, 05:49 PM   #8 
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Quote:
Originally Posted by Bombalurina View Post
Does it? I thought you could still get sunburnt through water.
I honestly don't know....But now I am worried because I know diurnal reptiles need UV light, and I don't know if fish are different in that way...
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Old 03-08-2013, 05:54 PM   #9 
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UVB is not blocked by water. In fact, it's been studied whether UVB can give fish cancer.

UVB is not a requirement for most fish; in fact, running UV lights on your tank can actually sterilize out your bacteria.
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Old 03-08-2013, 05:55 PM   #10 
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Based on what I just looked up, uv rays can definitely penetrate water to any depth that a betta will be at...

EDIT @tekkguy; So UVB can actually be bad for them? Would you advise against using a full spectrum light on an aquarium if possible?

I am still confused though...because they must be exposed to it in nature, and I know reptiles that are exposed to it in nature need an artificial one in captivity, so...

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