Search found 7 matches

by testudolinks
Tue Jun 07, 2011 5:08 pm
Forum: Lighting, Misting Systems, Tweaks, Modifications
Topic: Color Temperatures for Bulbs
Replies: 36
Views: 4480

Re: Color Temperatures for Bulbs

The LED is a Seoul Z-Power LED Natural White. I do not see anything that is good about this led, except colour rendering index and correlated colour temperature - good for domestic lighting, but useless for a terrarium. The spectrum ends at 420nm, the LED does not only not have any UVA it even does ...
by testudolinks
Tue Jun 07, 2011 11:46 am
Forum: Lighting, Misting Systems, Tweaks, Modifications
Topic: Color Temperatures for Bulbs
Replies: 36
Views: 4480

Re: Color Temperatures for Bulbs

I like to beleive that since we evolved all under the same sun(light), that one should shoot for a light source that best duplicates: I agree completely. But colour temperature is absolutely the wrong method. It will not help you at all! Look for lamps with a "nice" spectrum between 350 a...
by testudolinks
Tue Jun 07, 2011 10:53 am
Forum: Lighting, Misting Systems, Tweaks, Modifications
Topic: Color Temperatures for Bulbs
Replies: 36
Views: 4480

Re: Color Temperatures for Bulbs

In reefing it was hard to find a bulb color temp that was the same from one company to the next. One bulb would say 14k and be as blue as another's 20k and vice versa. On the right hand side of the picture, when the lucky reptile bright sun lamp is shown, you see that the colour "point" i...
by testudolinks
Tue Jun 07, 2011 4:35 am
Forum: Lighting, Misting Systems, Tweaks, Modifications
Topic: Color Temperatures for Bulbs
Replies: 36
Views: 4480

Re: Color Temperatures for Bulbs

I like to add, that colour temperature is a very weird concept. It took me ages to understand it. In many books it sounds like: Colour temperature 5600K means that the light is comparable to sunlight. This is wrong! If a fluorescent tube has a colour temperature of 5600K, this means that the relativ...
by testudolinks
Mon Jun 06, 2011 2:18 pm
Forum: Lighting, Misting Systems, Tweaks, Modifications
Topic: UVB Light - its pros/ cons
Replies: 128
Views: 20009

Re: UVB and its pros/ cons

I am having trouble understanding this...so 80% is not acceptable at all ? Can you clarify what thresholds were are trying for in UVB ? 80% is fine :-) It just that "UV" is not specific enough. The material needs to be transparent below 310nm, because only this part of the UVB will work f...
by testudolinks
Mon Jun 06, 2011 11:05 am
Forum: Lighting, Misting Systems, Tweaks, Modifications
Topic: UVB Light - its pros/ cons
Replies: 128
Views: 20009

Re: UVB and its pros/ cons

I got an e-mail back from PPG.....I was sent a PDF that has all PPG glass specifications. Here is the specs for Starphire thickness UV%(pass through) visable % 1/8 89 91 If you want "vitamin d transparent" glass, 80% UV does not help. It needs to be at least 60-70% below 310nm for vitamin...
by testudolinks
Mon Jun 06, 2011 10:14 am
Forum: Lighting, Misting Systems, Tweaks, Modifications
Topic: UVB Light - its pros/ cons
Replies: 128
Views: 20009

Re: UVB and its pros/ cons

Addendum: Sarina Wunderlich is using a method of testing UV lights by combining Solarmeter 6.2 and 6.5 readings to see if UV lights are emitting wavelengths of undesirable low low UV B and UV C rays...hmmm.. by somehow triangulating(?) the readings. Actually it was Frances Baines' idea (uvguide.co....

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