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  2. We are after as many aquarium plant images that we can get, doing so will assist us in completing the aquarium plant database.

    https://barrreport.com/threads/aquatic-plant-images-wanted.14374/
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Breaking up the Photoperiod

Discussion in 'General Plant Topics' started by growitnow, Jul 15, 2007.

  1. growitnow

    growitnow Lifetime Charter Member
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    I've seen posts that a period of darkness within the overall photoperiod is not known to enhance plant growth.

    But my question comes from the other direction - is there any basis to think a period of darkness is *not* desirable? (algae, plant growth, fish, etc.)

    Goal is simple. I recently delayed light onset at beginning of day in order to shorten overall photoperiod (which is currently from 11am-8pm). But now lights are out before I go to work, and I enjoy my morning coffee looking at tank.

    I would like to:
    Lights ON 6-8am
    Lights OFF 8am-1pm
    Light ON 1pm-8pm

    Curious of anyone does this, or has suggestions/cautions. Duration of first ON phase not relevant, as long as lights come on when I do


    Thanks,
    growitnow
     
  2. Tom Barr

    Tom Barr Founder
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    Some have done this for this same reason.
    I really do not think it's that critical, as long as you do not turn them on for only 1-3 hours, instead going for a 5-6 hiur frame and not leave the midday period too long, not more than about 2 hours or so.

    I just turn the lights on late in the day so I can see things at night when I have more time.

    Regards,

    Tom Barr
     
  3. growitnow

    growitnow Lifetime Charter Member
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    Tom, thanks.

    Not having a long dark period in the middle makes sense upon your reply. Particularly if one is driving CO2, where dark+CO2 = high CO2 levels plus some wasted gas.
     
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