Photoperiod for growth

Discussion in 'General Coral Care' started by Neil H, 9 Jul 2009.

  1. Neil H

    Neil H Moderator MASA Contributor

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    Has anyone tried increasing the photoperiod of their tank to say 18hrs a day and if so have you noticed an increase in coral growth ?
     
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  3. Mekaeel

    Mekaeel Moderator MASA Contributor

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    Neil, I read somewhere on Zeovit.com, some guys reduced their photoperiod and found that their growth improved. Reducing it to 4-6 hours a day.
     
  4. Mekaeel

    Mekaeel Moderator MASA Contributor

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    I dont know if im lying about reading it on Zeovit.com. I cant seem to find the thread.....
     
  5. Neil H

    Neil H Thread Starter Moderator MASA Contributor

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    Thanks for the info Mek....

    nature is funny that way ..... anyone else got an opinion !
     
  6. Neil H

    Neil H Thread Starter Moderator MASA Contributor

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    i wonder ..... if the tank were in a dark room.... read no window..... would 2 photo periods of 4 hours followed by 8 hours of dark trick the coral into thinking it was 2 days and not one and hence grow faster??????
     
  7. FransSny

    FransSny

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    Mek I also read a similar thread somewhere, donth think it was zeovit though....will see if i can find it again
     
  8. Warr7207

    Warr7207

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    The idea behind this is doubling up day/night cycles. Although I don't totally agree with this sort of growth strategy.
     
  9. Mekaeel

    Mekaeel Moderator MASA Contributor

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    I guess it is done this way because in nature, a reef only get about 4-6 hours of direct sunlight a day.
     
  10. Annoying

    Annoying

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    Is'nt nature weird and always full of suprises:slayer::slayer::slayer:
     
  11. Manic

    Manic Moderator

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    I read some where that corals only grow whilst the lights are off. So when the lights are on they store the energy needed to grow because whilst the lights are on all they concentrate on is gathering all the light possible and when the lights turn off they use the stored energy to grow. Also read that shortened more intense photoperiods are better for growth. In other words it is better to use a 400W MH for say 4 hours than a 150W MH for 10 hours.
     
  12. Mekaeel

    Mekaeel Moderator MASA Contributor

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    Manic, it makes sense bud. I noticed since I reduced my MH's from 11 hours a day to 7, my growth has really increased, but at the same time to take into consideration my system is nutrient poor recently which assists in growth aswell as color of SPS.
     
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