Discussion in 'Reef Aquarium Discussion' started by jedimasterben, Oct 31, 2012.

Lighting spectra, Photosynthesis, and You

  1. USMC4Life

    USMC4Life Well-Known Member

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    I am very surprised. But that's good. Test it out put a frag in and see how it handles it.
     

  2. David Engh

    David Engh Well-Known Member

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    So what should my lux reading be on the meter
     
  3. saltyfilmfolks

    saltyfilmfolks Lights! Camera! Reef! R2R Supporter R2R Excellence Award Photo of the Month Award Reef Squad

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    min 25,000 lux at 8 in. as an estimate. not going to be much par available though i would guess. very iffy.
     
  4. David Engh

    David Engh Well-Known Member

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    I will test it out when I get home from work an let you know what I find out. Thanks for the info and help. Will keep ya posted.
     
  5. mcarroll

    mcarroll Well-Known Member R2R Supporter R2R Excellence Award

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    Probably anything around 15,000-20,000 lux would be OK, but anywhere between that and 50,000 lux would be pretty ideal. Up to 80,000 lux is accptable for most corals, but can be a cause of some oxidative stress too.

    More light is not necessarily better - corals are low-light specialists, really - but you do have to satisfy their minimums. Their minimum is called thier "light compensation point"....where they get enough light to cover costs of metabolism. Aka "Enough light". Most corals seem to hit their compensation point somewhere around 5,000 lux, plus or minus a few K. More light than that is gravy! :)

    Bonus article on corals adapting to low light and high light situations:
    "Primary Production and Photoadaptation in Light- and Shade-Adapted Colonies..."
    http://rspb.royalsocietypublishing.org/content/222/1227/161.short

    Oh, also, the table of lux values here should give some more perspective:
    https://en.wikipedia.org/wiki/Lux#Illuminance

    Samples are taken at the surface so it doesn't matter. :)
     
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  6. Justin Nguyen

    Justin Nguyen Well-Known Member

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    Great article. Thank you so much.
     
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  7. Company101

    Company101 Well-Known Member

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    Jumping in on this thread.

    My current set up is 2-1 royal blues to neutral white.

    I have
    40 royal blues
    20 neutral whites
    4 lime
    8 UV.

    These are spread out over 4 units.
    Over a 180 gallon tank

    IMG_0076.JPG

    Here is my tank

    I run a storm controller with 6 dimmers

    All leds were purchased from rapid.

    I have debated adding Violet. Maybe another color

    I believe I am turned up to about 75%

    I have light defusion white from Home Depot over the tank to keep jumpers in the tank.

    The grid is 18" above the tank.

    Just bought a biotech parameter to measure light.

    My corals open up. And grow. But not fast. Or nearly no growth.

    Any advice will be welcomed.
     
  8. mcarroll

    mcarroll Well-Known Member R2R Supporter R2R Excellence Award

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    Lights and flow and nutrients......and that's assuming your water chemistry is steady. Any variation there can stall things out and even make ugly.
     
  9. NRG1337

    NRG1337 Active Member

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    hey guys,

    sorry for hitting this thread with my individual problem but i think this is the right thread for me after reading 4 days through all of europe forums.

    I have problems with my acans and maxspext razor 160k 16w.

    Every Acan i add in my tank looses the bright green what is really sad to see.

    My Lamp runs 55% white and 85% blue.

    Look at this ... Day1 and Day 30 Almost the whole Rainbow and bright green is gone and they turn orange/brown - what can i do?

    http://fs5.directupload.net/images/170423/xs5tlhqk.jpg

    Got the same issue on several other frags ... bright green disappears

    Im very thankful for your tips and pls excuse my english, writing from germany

    Best Regards ... Chris
     
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  10. jedimasterben

    jedimasterben Bubble coral sting good

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    Probably need less light.
     
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  11. saltyfilmfolks

    saltyfilmfolks Lights! Camera! Reef! R2R Supporter R2R Excellence Award Photo of the Month Award Reef Squad

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    Hi Chris.
    There is a relationship between light and nutrints. Here's another equally great thread! https://www.reef2reef.com/threads/h...d-i-dont-know-what-to-do.210035/#post-2401666

    And Welcome to Reef2reef! Feel free to post up questions anywhere.
     
  12. NRG1337

    NRG1337 Active Member

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    Thx for youre input.

    @jedimasterben actually the colony is kind of shaded at the corner of a tank. And got some other frags that are compeletely in shade and lost their whole green rings.

    http://www.directupload.net/file/d/4700/q3iyt44v_jpg.htm

    http://www.directupload.net/file/d/4700/b2p6kd56_jpg.htm

    Has todo something with the spectrum or something. Corals were bought at a seller who runs radion g3 pro very blueish ... Maxspect seems to miss something against the radions.

    I really dont know if i should lower down the light, or raise it - very confused right now.


    @saltyfilmfolks thanks alot

    Maybe they changed color cuz i got PO4 at 0.16 and the seller around zero ?


    Right now im seconds away from order a Hydra 52 or a Radion G4 Pro

    Really want to get this acan colorations back
     
    Last edited: Apr 23, 2017
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  13. saltyfilmfolks

    saltyfilmfolks Lights! Camera! Reef! R2R Supporter R2R Excellence Award Photo of the Month Award Reef Squad

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    you are either bleaching or browning. to much or too little. IMO.
     
  14. NRG1337

    NRG1337 Active Member

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    Bleaching definetly not but maybe browning? here a good pic 5 days old under more whites ...

    http://www.directupload.net/file/d/4700/2hfeasz6_jpg.htm

    This is also the place where i put it since i got it. After loosing color i change the sides cuz on the left is more shade ...

    Btw the little orange acan in the background is fully shaded an had very bright green rings too !
     
  15. saltyfilmfolks

    saltyfilmfolks Lights! Camera! Reef! R2R Supporter R2R Excellence Award Photo of the Month Award Reef Squad

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    that link just about crashed my computer.
    can you chose the imbed photo?
     
  16. mcarroll

    mcarroll Well-Known Member R2R Supporter R2R Excellence Award

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    Seriously....pop-up city. Embed images if possible pls....it's easy thru the website as well as the app! :)

    I would also suggest opening your own thread to troubleshoot the coral color issues you're seeing vs assuming it's a spectrum thing.

    A "spectrum thing" means you make your corals more green, for example, by shining a greener light on them. That's a silly way to color your corals, but it "works".

    If you've noticed colors change while under your lights, then you need to be looking at two things as compared to where the corals came from:
    1. Light levels
    2. Nutrient levels
    Reviewing your tank's flow would also be smart as that figures in along with the rest of your water chemistry.

    Use a PAR meter or lux meter to measure your lights and the lights where the corals came from. You might find that they aren't as close as you think.

    NO3 and PO4 levels matter – especially PO4 where light stress may be a factor. (Like when a coral gets moved....to a whole new tank!)

    If your levels are close to zero on either (especially PO4), that's a problem.
     
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  17. NRG1337

    NRG1337 Active Member

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    oh ok maybe the size of pic ...

    20170412_143013.jpg

    20170412_143013.jpg
     
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