REPOST:fine screen lid filters out UVB?

[chameleon7]

I've been told two different things and i'm confused, one person told me it should be alright having my uvb light on top of the screen lid with 1mm holes and that if i put it in there it will cause eye damage? someone else told me he will get hardly any UVB with the screen lid in the way, would love some replies, thanks! P.S My UVB light is a Reptile one, 15 Watt T8 10.0 Reptiglo.

 

[AHBD]

Hi there....according to the test done by uv.guide.co.uk fine mesh filters out from 25-35 %. If you don't have a reflector on your fixture you can use aluminum foil to increase the amount of uvb reflected in to the tank. If you used screening that is slightly larger holes you only lose about 15 %.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwiY2onsqtPRAhXq1IMKHYp6De8QFgggMAA&url=http%3A%2F%2Fwww.uvguide.co.uk%2Ffluorescenttubemeshtests.htm&usg=AFQjCNEblaL0mKNp5_C2jh6Rckx3w67ucg&sig2=yBZ6I-6zbGeoNf39ctf4sA

 

[CooperDragon]

Since you're using a T8 I recommend mounting it inside the tank unless you have a small (20g or less size) as they aren't very powerful to begin with. If you're using a reflector, the optimal distance for a T8 is about 6-8'' above the basking area. This distance should provide sufficient UVB and not be too intense as to cause eye issues.

 

[chameleon7]

thanks for the replies!, just checking what you mean by 20g ahah imma dummie :roll: :wink: :mrgreen:

 

[CooperDragon]

20 gallon tank. They are only 12'' tall so if you put any kind of logs/hides in it, that will bring it into the 6-8'' range and there isn't enough room for a more powerful bulb to be safe at that distance.

 

[chameleon7]

the dimensions are 90cm by 45cm by 45 cm

 

[CooperDragon]

OK that's a bit bigger. You'd be best off getting a T5 and setting that on top but your T8 will be OK if you mount it inside. It should sit 15-20cm above the basking area for best results.

 

[chameleon7]

Thanks cooper, how far does the bulb need to be from my beardie if i mount it on the inside? Thanks again! :mrgreen:

 

[CooperDragon]

A T8 should sit 15-20cm above the basking area when mounted on the inside.