SunBlaster's T5 Reflectors

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SunBlaster's T5 Reflectors

Postby MrSpectrum » Sun Aug 18, 2019 9:58 pm

Hi Folks!

Can someone (or a few folks) who actually own/use a SunBlaster T5 fixture with (integral) reflector tell me if the reflecting surface is white or mirrored?

Photos on the web are confusing :? ; in some the reflector appears mirrored, while in others it appears white.

Believe it or don't, it actually makes a difference; mirrored surfaces reflect UV-B better than white surfaces, and white can affect the wavelength of the reflected light.
Google: mirrored vs white reflector for explanations. :)

Reptisun reflectors are mirrored. I'm guessing that if SunBlasters are white, one reason may be that SunBlaster fixtures are designed/intended as grow lights for plants, while Reptisun are designed/intended specifically for reptiles.

Thanks.
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Re: SunBlaster's T5 Reflectors

Postby kingofnobbys » Mon Aug 19, 2019 6:50 am

I don't have any Sunblaster T5 reflectors.

General comments.

Polished metal finish is better.

Will reflect all wavelengths of light including UV.

Problem with painted reflectors is the paint will absorb some wavelengths and may re-emit at unexpected wavelengths depending on the composition on the paint ( pigments and substrate ).
I have not seen any UV re-emission scans for common "glow" reflectors.
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Re: SunBlaster's T5 Reflectors

Postby claudiusx » Mon Aug 19, 2019 7:06 am

Here is sunblaster website for the reflector:
https://www.sunblasterlighting.com/our-products/grow-lighting/nanotech-t5-reflectors/
Its pvc with a crystal coating apparently. Not painted.

But like I mentioned to you in PM, we have the acceptable distances measured out for this specific reflector and fixture. It would be interesting to test the output between the reptisun and the sunblaster fixture to see if there is a difference, and what it is. Most people dont go that route just because it's so much more expensive so it hasn't been tested as much as the sunblaster.

-Brandon
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Re: SunBlaster's T5 Reflectors

Postby CooperDragon » Mon Aug 19, 2019 9:40 am

I had that fixture and reflector at one point and it was a mirrored surface on the bulb facing side. It did quite a nice job of reflecting UVB compared to a cheaper knockoff I tested it against.
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Re: SunBlaster's T5 Reflectors

Postby Drache613 » Mon Aug 19, 2019 9:20 pm

Moved by Moderator from Enclosures to Advanced lighting/enclosures Discussion
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Re: SunBlaster's T5 Reflectors

Postby MrSpectrum » Tue Aug 20, 2019 5:51 am

CooperDragon wrote:I had that fixture and reflector at one point and it was a mirrored surface on the bulb facing side.


Thank You! That could explain the confusion/discrepancy in the pics. Unfortunately, it appears they only have the white reflector now. :(

Not sure what I'm going to do now... :cry: :study:
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Re: SunBlaster's T5 Reflectors

Postby claudiusx » Tue Aug 20, 2019 7:22 am

The reflector isnt too much, since you're getting the 6.5 anyways maybe you can be our Guinea pig and test it for us lol!

I dont know why they would change it though. The "crystals" they infuse on the pvc might be what gives it its mirrored look. I know sometimes companies make reflective materials white in editing to give it a cleaner look.

But a few people have bought them recently on this board and none have mentioned that it's a white reflector.

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Re: SunBlaster's T5 Reflectors

Postby kingofnobbys » Wed Aug 21, 2019 9:45 pm

Reflective in visible light doesn't infer reflective in UVA and UVB bands.

Unless the reflector has a polished metal or "vapor deposited" aluminium surface , I'd be reluctant to use it as there is a very good chance the surface of the "painted" / powder coated surface will actually absorb UVA & UVB and perhaps reemit the light in the visible bands , see below for basics :
Image

In short - if the reflector is not designed to reflect better than 80% of the UVA & UVB that falls on it's front surface , it's not suitable for use in a reptile enclosure.
See this for specular reflectivities of some reflective surfaces :
Image
Ref : Evaluation of reflectivity of metal parts
InfraMation 2010 Conference Proceedings p210-p243, Z. Sarosi

This is why I'd be looking for a polished aluminium reflector or a vacuum aluminized surface on the reflector.
The substrate behind the reflective surface is irrelevant ( it only forms the focusing shape and holds the reflective surface in place ).
CBDs: Cleopatra & Caesar born 28Jan19.
Puff (RIP 10Dec15),Rex (RIP 16Mar17),Toothless (RIP 26Nov17).Peppa (RIP 22Mar19).
EBTSs : George & Mildred (born july 2010).
EWSs : Fluffy - 4yr rescued lawnmowing accident victim 14Nov17.
Lucky - cat attack rescue, fatal SI RIP 21Jul2010.
Wriggles - rescued injured ,thought she was a big lizard, over 8 yrs old, RIP 2Feb16. .
Gecko : Godzilla the hatchling GEHYRA GECKO (hatched May 2019)
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Re: SunBlaster's T5 Reflectors

Postby claudiusx » Thu Aug 22, 2019 5:08 am

Or dont even use a reflector. It's not necessary unless you need higher output.

But like I said, the sunblaster reflector has been tested multiple times by multiple people on this site. It does a good job at increasing uvi output of the bulb.

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Re: SunBlaster's T5 Reflectors

Postby claudiusx » Sat Aug 31, 2019 6:41 am

Just an update. I needed another fixture for my new build. I don't usually use the reflectors but for 6 bucks more I got it.

It's definitely mirrored.
[Click image to enlarge]


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