Sky light pro's & con's

Discussion in 'Lighting' started by nico.m.ferreira, 27 Jul 2011.

  1. nico.m.ferreira

    nico.m.ferreira

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    I am thinking the past few days about the pro's and con's having a skylight for lighting in a marine tank argument sake 2m long 0.8m wide and water level at 0.6m.
    Know there are a few reefers that are doing this.
    I was looking on the net but are strugeling to find good information.
     
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  3. rakabos

    rakabos

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  4. hermie

    hermie

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    Tagging on this one as I have also thought about this...
     
  5. nico.m.ferreira

    nico.m.ferreira Thread Starter

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    Hope the experts can come on board.
    Liky how the internals work to get maximum amount of light to the tank, any filters and so on.
     
  6. Bob the (reef)builder

    Bob the (reef)builder

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    There are many things to consider with skylights.

    1. The most important I think is that it is big, it should ideally be bigger than the tank. Adee's is more like the whole roof over the tank, which is great. A reason why this is important is that seasonality is a factor. Also remember that the sun is directional and that only at midday in midsummer is is shining directly into the tank

    2. This means that unless you can make the whole roof a skylight you will need to make extensive use of reflectors.

    3. Seasonality caused me to use a moveable mirror to get more light on the tank during winter.

    4. Sunlight is very yellow. I use blue lights to shift the colour to a more white/blue look and to provide light after the sun goes down. If there is enough light the blue filters can be used.

    5. With the fact that the sun moves daily and that seasonaly it provides more and less light, it is a factor in maintaining stability in the tank.

    I love my skylit tank. I love the fact that it changes through the day and that the angle of light on the corals change in a fairly natural way. It does pose some challenges though especially if the light is not big enough.:)
     
    Last edited: 27 Jul 2011
  7. nico.m.ferreira

    nico.m.ferreira Thread Starter

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    Thanx BOB, how about algea problems with the natural sun?
    Plus its an aded bonus not to swap a bunch of MH globes and T5 tubes.
     
  8. Bob the (reef)builder

    Bob the (reef)builder

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    Never had an issue at all. You have to have a balance of low nutrients and enough herbivores to avoid algae issues. If you have enough light to grow SPS there is plenty to grow algae.:)

    Oh it saves a heap in electricity and lights. I could not afford my big tank without natural light.
     
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