Keeping macros down in the 'fuge where they belong?

Discussion in 'Biological/Natural Filtration and Deep Sand Beds' started by RocketRooster, 27 Feb 2013.

  1. RocketRooster

    RocketRooster

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    I added a big clump of caulerpa to my sump (this is the start of big things!). I am however concerned about it ending up in the DT and becoming a pain.

    Sump lighting 24/7, check. Filter matting between fuge and pump chamber, check.

    What else? Should I flood the sump with red and blue wavelengths to encourage the caulerpa in there to outcompete any algae in the DT?

    Thanks!
    Riaan
     
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  3. dallasg

    dallasg Moderator MASA Contributor

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    If any makes it to DT, my tangs and foxface make short work of it
    You can add 6500k or lower light for it, red spectrum
     
  4. RocketRooster

    RocketRooster Thread Starter

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    My past research into growing, erm, 'electric monkey algae', indicates blue and red (more blue than red, actually). Are aquatic greens more responsive than terrestrial greens to red?
     
  5. dallasg

    dallasg Moderator MASA Contributor

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    Algaes like red , it's warm white you want, not cool white
     
  6. RocketRooster

    RocketRooster Thread Starter

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    Shot, that's what I figured as well.
     
  7. DeanT

    DeanT Dean

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    I have mine under 2 led spots - yay or nay ?
     
  8. RocketRooster

    RocketRooster Thread Starter

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    Should be fine if they're getting enough of the wavelengths they want. Like any plant they'll tell you if they need more, by going pale and stringy. Plants that get the right light develop very dense growth habits.
     
  9. dallasg

    dallasg Moderator MASA Contributor

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    Warm white?
     
  10. RocketRooster

    RocketRooster Thread Starter

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    I'm rethinking the warm white, Dallas. The yellow tone can only be caused by green in the spectrum, which is useless to us.
     
  11. DeanT

    DeanT Dean

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    Cool white
     
  12. Visser

    Visser MASA Contributor

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    Which macro algae did you add?
    The yellow spectrum in any flood/spotlight should be fine.
    The best algae growth i ever got was under a small halogen floodlight (very yellow)
     
  13. dallasg

    dallasg Moderator MASA Contributor

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  14. RiaanP

    RiaanP Moderator

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    warm and cool white CFL works.

    Also LEDS in that range.

    I'm using 2 * 10W LEDS spotlights and my cheato is growing very good.
     
  15. RocketRooster

    RocketRooster Thread Starter

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    My copy of Biochemistry, Second Edition (Mathews, et al), has the following graphic.

    There's much of interest in it. Using warm white means that you are starving the most active part of the chlorophyl a and b pathways. That said, there are a number of accessory pigments which are active in the lower spectra, so warm white will work well if bright enough.

    That said, a cool white spectrum has a greater useful range of emission, since it includes blue. Hence, there can be little doubt that cool white is better for green algae than warm white.

    Phycoerythrin is the primary pigment used by red cyano, and it's pretty clear that cutting down the green spectrum in your DT's lighting can help with cyano problems.

    SAM_0245.JPG
     
    Last edited: 28 Feb 2013
  16. dallasg

    dallasg Moderator MASA Contributor

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    nice, thanks for that, thats why i dont have green LEDs
     
  17. MistaOrange

    MistaOrange

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    Use a normal 50w down light it works wonders & the macro algae grow well under that light. I used it before & will use it again. Didn't @jacquesb have a thread on this?
     
    Last edited by a moderator: 26 Nov 2015
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