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  1. #1
    Elite Member CTScrivener's Avatar
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    Question About UVB Vs. Tank Height.

    Ok, so we all know that UVB decays after x inches and that the dragons need to be within that x inches to gan any benefit from the UVB being emitted from the bulb.

    ALSO!

    Everyone here pretty much states that most lizard type herps, snakes, and other animals need a cage 2 times larger than the length of the animal. Chinese Water Dragon are climbers not really ground dwellers, so the tank would need less of a footprint and more height to it.

    QUESTION!

    If my future tank is to be 3' to 4' tall (the actual tank part, not including the stand and hood areas), the UVB wont play any benefit towards the lower part of the tank. Is this okay? I mean, is it okay if the entire cage is not drenched in UVB rays? Is it okay that it's truly up to the dragons to get higher up in the cage to bask for heat and UVB?

    I plan on building a cage, that happens to be tall and I want to make sure that if the UVB bulb only covers the top half of the tank, that will be alright. Or will I need to add a second bulb halfway down the tank to cover the rest of it?

    I have never really seen this question arise and would like to know before starting to fabricate the new enclosure.






  2. #2
    Elite Member murrindindi's Avatar
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    Re: Question About UVB Vs. Tank Height.

    The very best UVB emmiting lamps currently available are the Megarays, they emmit UVB close to natural sunlight at the recommended distances, excellent for the larger enclosures, and no, the WHOLE of the tank doesn`t need to be illuminated with this lamp, (it gives off the rays in a 30inch circle) it would be used as the basking area, you may still need supplementary lighting/heating to reach the required temps, that of course depends on wattage and cage size....

  3. #3
    Administrator Merlin's Avatar
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    Re: Question About UVB Vs. Tank Height.

    UVB decays after x inches and that the dragons need to be within that x inches to gan any benefit from the UVB being emitted from the bulb
    That is in dealing with fluorescent tubes. The Mercury vapor bulbs such as the Megaray put UVB out much farther than the tubes. For a tall enclosure the mercs are the way to go.
    Merlin,
    What's Life Without A Little Magic!

  4. #4
    Elite Member CTScrivener's Avatar
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    Re: Question About UVB Vs. Tank Height.

    Awesome, thanks guys....just trying to get all my questions answered before I undertake this laborous task.

    I'm going to try and make it into three different sections that can be locked together or removed separately to help in moving it if I ever move to a different place.

    It's going to be pretty much completely wood, minus 1 or two big glass doors in the front. I'm hoping that if more sides are covered they will feel more at home in thier natural enviroment and just sit out on branches and such.

    I'm also thinking about having it to where it's an inner wall, the framing, and then the outer wall. It would leave a good gap between the two walls so I can install the misting system lines hidden out of view.

  5. #5
    Elite Member murrindindi's Avatar
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    Re: Question About UVB Vs. Tank Height.

    Quote Originally Posted by CTScrivener View Post
    Awesome, thanks guys....just trying to get all my questions answered before I undertake this laborous task.

    I'm going to try and make it into three different sections that can be locked together or removed separately to help in moving it if I ever move to a different place.

    It's going to be pretty much completely wood, minus 1 or two big glass doors in the front. I'm hoping that if more sides are covered they will feel more at home in thier natural enviroment and just sit out on branches and such.

    I'm also thinking about having it to where it's an inner wall, the framing, and then the outer wall. It would leave a good gap between the two walls so I can install the misting system lines hidden out of view.
    Check out Merlins enclosure., its in sections, bolted together, we had a thread on this subject not too long ago....

  6. #6
    Elite Member CTScrivener's Avatar
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    Re: Question About UVB Vs. Tank Height.

    Hey, what is your opinion on using a fixture like this to house the bulbs at the top of the tank?

    Utilitech at Lowe's: 150-Watt Single Metal Flood Light

    As long as they don't jump onto the fixture, which I might put a protective mesh box around it just incase, it should be fine right?

    I only have to watch out for Trog, as she likes to pretend she's an astronaut and walk upside clinging to the aluminum/mesh top on my terrarium at the moment. I don't know how many times I've walked into the room to find her hanging upside down from the top. TARD.

  7. #7
    Administrator Merlin's Avatar
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    It should work as long as its rated for the wattage of your bulb. Though I do seem to remember hearing something about keeping the bulbs vertical and not mounted at an angle.
    But I may be mistaken.

    And I would most definately cage the bulb!
    Merlin,
    What's Life Without A Little Magic!

  8. #8
    Elite Member murrindindi's Avatar
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    Re: Question About UVB Vs. Tank Height.

    From looking at the picture, the bulb is mounted on what looks like an adjustable lamp holder (on an angle), so I would think it`s fine, but ask just to be sure...

  9. #9
    Elite Member Dragoness's Avatar
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    Re: Question About UVB Vs. Tank Height.

    your Chinese Water Dragon will also be spending a goodly amount of time up in the higher regions of the cage. They feel much safer up in the trees, so to speak. They will most assuredly be getting sufficient UVB, so long as they can get within the range of the bulb.
    My name is Jen.

    "Teaching a child not to step on a caterpillar is as valuable to the child as it is to the caterpillar."

    -Bradley Miller-

  10. #10
    Elite Member CTScrivener's Avatar
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    Re: Question About UVB Vs. Tank Height.

    I figured they would want to spend time up there, just didn't know if it was a good thing to put it in thier hands to get into the light or not. I know that's kinda stupid to say since they survive in wild just fine by themselves without someone walking into the forest every day putting them into a sunny part of the woods. LOL.

    I just know my male likes to bury himself underground for god knows what reason.

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