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I use flourescent (tube style) UVB bulbs for all of my UVB needs...

In my Tegu's enclosure the 10.0 flourescent UVB bulb is mounted 12" above the substrate. This means my Tegu's skin is less than 6" at the closest, 12" at the furthest, when he is beneath the bulb.

My heat lamps and my UVB lamps ovelap, but the tegu can also bask in either (heat or UVB) without the other. So he can bask in UVB only, heat only, or UVB & heat...

UVB erodes as it passes through air. Thus the closer to the bulb, the stronger the UVB (radiation). The UVB from a 10.0 bulb will go further from the bulb than the UVB from a 5.0 bulb. For this reason I believe a single 10.0 bulb will be better for you than two 5.0 bulbs.

Knowing the type of bulb used and the type of gecko burned has a lot to do with the conclusion of that story. If the geckos are nocturnal, not requiring UVB, then any UVB is 'too much' and can have ill effects. We also have to ask how close the gecks were to the bulb. If the geckos are arboreal and climb onto or right next to the bulb, then it makes sense they could get too much UVB. Also, as questioned above, were they burned from too much UVB or too much heat.

ZooMed bulbs have a strong reputation and I've had nothing but great experiences using them. But of course it is our responibility to choose the right bulb for our application, as well as to mount the bulb properly.

<blockquote data-quote="Toby_H" data-source="post: 71576" data-attributes="member: 246">I use flourescent (tube style) UVB bulbs for all of my UVB needs...In my Tegu's enclosure the 10.0 flourescent UVB bulb is mounted 12&quot; above the substrate. This means my Tegu's skin is less than 6&quot; at the closest, 12&quot; at the furthest, when he is beneath the bulb.My heat lamps and my UVB lamps ovelap, but the tegu can also bask in either (heat or UVB) without the other. So he can bask in UVB only, heat only, or UVB &amp; heat...UVB erodes as it passes through air. Thus the closer to the bulb, the stronger the UVB (radiation). The UVB from a 10.0 bulb will go further from the bulb than the UVB from a 5.0 bulb. For this reason I believe a single 10.0 bulb will be better for you than two 5.0 bulbs.Knowing the type of bulb used and the type of gecko burned has a lot to do with the conclusion of that story. If the geckos are nocturnal, not requiring UVB, then any UVB is 'too much' and can have ill effects. We also have to ask how close the gecks were to the bulb. If the geckos are arboreal and climb onto or right next to the bulb, then it makes sense they could get too much UVB. Also, as questioned above, were they burned from too much UVB or too much heat. ZooMed bulbs have a strong reputation and I've had nothing but great experiences using them. But of course it is our responibility to choose the right bulb for our application, as well as to mount the bulb properly.</blockquote>

[QUOTE="Toby_H, post: 71576, member: 246"] I use flourescent (tube style) UVB bulbs for all of my UVB needs... In my Tegu's enclosure the 10.0 flourescent UVB bulb is mounted 12" above the substrate. This means my Tegu's skin is less than 6" at the closest, 12" at the furthest, when he is beneath the bulb. My heat lamps and my UVB lamps ovelap, but the tegu can also bask in either (heat or UVB) without the other. So he can bask in UVB only, heat only, or UVB & heat... UVB erodes as it passes through air. Thus the closer to the bulb, the stronger the UVB (radiation). The UVB from a 10.0 bulb will go further from the bulb than the UVB from a 5.0 bulb. For this reason I believe a single 10.0 bulb will be better for you than two 5.0 bulbs. Knowing the type of bulb used and the type of gecko burned has a lot to do with the conclusion of that story. If the geckos are nocturnal, not requiring UVB, then any UVB is 'too much' and can have ill effects. We also have to ask how close the gecks were to the bulb. If the geckos are arboreal and climb onto or right next to the bulb, then it makes sense they could get too much UVB. Also, as questioned above, were they burned from too much UVB or too much heat. ZooMed bulbs have a strong reputation and I've had nothing but great experiences using them. But of course it is our responibility to choose the right bulb for our application, as well as to mount the bulb properly. [/QUOTE]

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