Sunlight

Discussion in 'New Members' started by Warr7207, 29 Dec 2007.

  1. Warr7207

    Warr7207

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    Does sunlight effect a reef system negatively ?
     
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  3. lIghty

    lIghty

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    could be mistaken, but might cause algae growth.
     
  4. Warr7207

    Warr7207 Thread Starter

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    Bad algae or food ?
     
  5. lIghty

    lIghty

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    bad if I remember correctly, but i'm no expert, maybe the experts can assist.
     
  6. Mike

    Mike Retired Moderator

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    It can, it can heat up the tank, it can cause algae growth, but if correctly controlled (i.e. used selectively - for a few hours a day) can help the general well being of the tank - it works in nature so you just have to adjust "daylight" to suit your tank.
     
  7. lIghty

    lIghty

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    Wee-man, could you give more details
     
  8. Warr7207

    Warr7207 Thread Starter

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    Makes sense, the creator of life on our planet must be good in some way to our little bio-systems
     
  9. Mike

    Mike Retired Moderator

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    Tanks can benefit from sunlight but only if "used" sparingly, too much sunlight in your neck of the woods will overheat your tank, but if you can use the midday sun (don't ever forget that this is the life giver of our planet so it must be good for reefs in general) for an hour or so then your tank should benefit from it, but too much can give you problems with algae growth (the sun emits the entire light spectrum, we only want between 10,000 - 20,000k to encourage growth of coral rather than algae) there is a thread on here where sunlight is planned in - Bob's reef 2, have a look to see what i mean.
     
  10. Warr7207

    Warr7207 Thread Starter

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    thanks for the great info once again
     
  11. lIghty

    lIghty

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    thanks wee-man. makes sense.
     
  12. Mekaeel

    Mekaeel Moderator MASA Contributor

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    im currently lighting my tank with the early morning sunlight.i get about 4-5 hours of direct sunlight on my tank.i noticed incredible growth on my SPS.in terms of algea issues,if your nutrients are high,it will aid algea growth.heat is a bit of an issue,but if you chiller can cope,go for it!
     
  13. Warr7207

    Warr7207 Thread Starter

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    It makes sense that the sps will thrive with real sunlight
     
  14. Mekaeel

    Mekaeel Moderator MASA Contributor

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    i swear ,ive noticed incredible growth on my SPS since giving it a try.
     
  15. Hill

    Hill

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    Sorry dude I agree on some parts but disagree on others. Resonse inline.

     
  16. sunburst

    sunburst

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    No...but heat could be a concern
     
  17. Kanga

    Kanga Retired Moderator MASA Contributor

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    Agreed the light would be great, I mean mother nature uses it for her reefs, but the heat will be a problem
     
  18. lIghty

    lIghty

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    Quote:
    DISAGREE here. Lighting between 10 000K and 20 000K has very little PAR (Photosynthetically available radiation). Ok 10 000K has a usable amount but at 20 000K there is much less. Corals thrive better with a Lamp in the 6500K rating as they have more PAR available to them. But we choose to light with 10 000K and up because it is more visually appealing to us. Less PAR would stunt Algae growth but in the same way it would also stunt coral growth. People experiencing problems with Algae when using sunlight probably have nutrient problems to start with. The extra sunlight is just an accelerator, they would get a similar effect by doubling their light output.

    Stupid question, but wouldn't it be better to run a normal 6500K MH over the 14000K to stimulate corals?
     
  19. Kanga

    Kanga Retired Moderator MASA Contributor

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    Although it might be correct, your tank will be Yellow like Pee not attractive at all
     
  20. lIghty

    lIghty

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    Maybe run the 6500k when not viewing during the day and change over to the 14000k in the evening to view?
     
  21. Kanga

    Kanga Retired Moderator MASA Contributor

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    Good question, in theory i think you would be right, although I have no idea here.

    lets wait for the clever people to tell us :D
     
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