Glass covers over the DT

Discussion in 'General Discussions and Advice' started by Jaco Schoeman, 6 Oct 2009.

  1. Jaco Schoeman

    Jaco Schoeman MASA Contributor

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    Another question on Dad's behalf: :p

    He wants to close up his 3 foot cause he has a wrasse. He has a 150W MH and some T5's. What effect would covering the tank with glass have on lighting? How much light do you lose?

    Also, would this cause problems on heat etc? His DSB and his sump is open, and next to / below his DT, so they are still wide open for evaporation.

    Thanks guys:biggrin:
     
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  3. FransSny

    FransSny

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    BAD Idea Jaco, the glass will "break" the light very much like a prism breaks light. Also condensation , salt creep etc will influence light penetration
     
  4. Sentari

    Sentari

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    Big No no as Frans said.

    it helps with condensation but then the light bends and you loose all your light.
     
  5. Jaco Schoeman

    Jaco Schoeman Thread Starter MASA Contributor

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    Thanks guys. Will tell him. Maybe he can sandpaper the glass? HAHAHAHA - private joke Frans would know!!!

    Anyway, another issue would also possibly be the heat on the glass from the MH would make it burst in sudden temperature variation from water splashes etc.:whistling:
     
  6. Neil H

    Neil H Moderator MASA Contributor

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    agree with Frans
     
  7. FransSny

    FransSny

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    Ive got some extra glass left Jaco...you can just bring sandpaper :whistling:
     
  8. dogstar

    dogstar

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    Good question. But what do you do for fish which are jumpers? How do you prevent carpet swimmers?

    I lost a Fire Goby because he jumped out the tank. Very reluctant to get another because i am worried it will jump out too.
     
  9. FransSny

    FransSny

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    Plastic mesh ?
     
  10. dogstar

    dogstar

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    Is this not gonna also affect the amount of light that gets to the tank?

    Have never seen or heard of anybody using mesh. How do the guys with fire gobies prevent them from jumping out?
     
  11. Jaco Schoeman

    Jaco Schoeman Thread Starter MASA Contributor

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    My thought on the jumping matter with my tank will be a black rubber mesh mat that will be able to be rolled up - thus allowing for light to penetrate normally, then when I am not at home or throught the night, I would close it up...

    Not sure how much light I will loose thought; as the mesh has about 5mm x 5mm grid.

    I know the best way to prevent carpet surfing is having a closed canopy, but then the heat!!!
     
  12. FransSny

    FransSny

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    Jaco I think that size might restrict light a lot...I was thinking a bit larger
     
  13. catch22

    catch22

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    In my Nano the lid is closed but I have heard them bumping the plastic light shield when they jump. Any idea of how high they can actually go? My new tank has a 120mm surround They would have to clear about 180mm above water to get out. Is that enough
     
  14. RiaanP

    RiaanP Moderator

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    Glass should be fine if
    • you keep it clean
    • ensure you do not splash it with cold water
    • Make sure that when it is hot and expanded that it does not push the front and back glass outwards
    • have another method to blow in air under glass so that air exchange O2 and CO2 can still happen
    • Make sure it is thick enough to not break easily. At least 4mm
    But
    • It will be in your way
    • It will become too hot
    • It will become dirty
    It will not scatter the light that much, providing it is not scratched, sandpapered or covered with salt spray
     
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