Food for thought... coral and light

Discussion in 'General Discussions and Advice' started by dallasg, 19 Jun 2013.

  1. dallasg

    dallasg Moderator MASA Contributor

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    here is a quote to think on from coralscience.org
     
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  3. MistaOrange

    MistaOrange

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    Interesting thanks for sharing.:thumbup:
     
  4. viper357

    viper357 Admin MASA Contributor

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    So T8's and a bottle of plankton then?
     
  5. dallasg

    dallasg Thread Starter Moderator MASA Contributor

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    without sounding stupid but yes, my first tank was T8's 3 of them @ 30w and used to have loads of live food pumped in every hour..
     
  6. viper357

    viper357 Admin MASA Contributor

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    Does it say anything about the colours of the corals? Are they all brown or do they still display good colour?
     
  7. Visser

    Visser MASA Contributor

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    Cool thanks for sharing dallas!
    Where did you get the "food for thought" from?
    Its actually very true... Ive had montipora digitata frags break off & fall deep under the rockwork without any light for long periods of time (months) & survived!
    After i found them, i simply glued them to frag plugs & they thrived again.
     
  8. dallasg

    dallasg Thread Starter Moderator MASA Contributor

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  9. 459b

    459b Moderator MASA Contributor

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    You know my feelings on this topic. I think way too much emphasis is placed on lighitng, esp with the latest led craze.

    They prob wont be the unnatural luminescent colours of some tanks..but then are bright colours an indicator of health?
     
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  10. Visser

    Visser MASA Contributor

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    Yes & no...
    Browned out SPS (due to high nutrients & lower lighting) are definitely not happier than Pastel colored SPS (under high intensity lighting & low nutrients).
    The secret is to find the balance in both lighting intensity & nutrient levels for your personal coral collection.

    I have had SPS that had stunning colors in lower lighting & medium nutrients, & as soon as i moved them to a low nutrient high lighting system, they lost the intense color over a couple months & looked a lot paler...
     
  11. Visser

    Visser MASA Contributor

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    Every coral has its own requirements...
     
  12. dallasg

    dallasg Thread Starter Moderator MASA Contributor

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    actually i believe browned out corals are healthier, more zoozanthallae etc
    bright colouration of corals is the protection mechanism of corals, so i would believe them to be more stressed. we just dont like brown and green corals

    here is one reference
    Healthy Coral Descriptions - Photos of Ten Healthy Coral Varieties
     
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  13. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

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    Polyp extension is my driver

    Corals with great polyp extension is a sign of a healthy coral, colour is your water parameters and light. I've move many corals around to different tanks only to see the flourish after settling in more stable params
     
    Last edited: 19 Jun 2013
  14. dallasg

    dallasg Thread Starter Moderator MASA Contributor

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    I dont think polyp extension is really a good way of seeing the general health or not. The polyp is used for reproduction, light gather, offense, defense, prey capture and so on. So its a tough call to know way its extended or not.

    How corals feed
     
    Last edited: 19 Jun 2013
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  15. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

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    Mr G, i think there we need to agree to disagree. Any animal that does not want to feed is not healthy. Agreed polyps are extended for many other beneficial factors but feeding is a huge factor. Take it from Tubastrea (although NPS) and A. Milli's.

    I see milli's of really drab color for a long long time, and with great polyp extension, move them into more stable conditions and they bounce back and flourish.
     
  16. 459b

    459b Moderator MASA Contributor

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    Not sure about using polyp extension as a measure, polyp extension can differ under changing flow, time of day etc.
     
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  17. Andre@ReefAquatics

    Andre@ReefAquatics Sponsor

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    Not talking about a specific time of day, talking about general 24hr periods, we know that coral polyp extension varies due to flow and time of day. I'm more talking about the complete daily cycle. A colony that never extends polys concerns me, colonies that extends their polys periodically don't.
     
    Last edited: 19 Jun 2013
  18. dallasg

    dallasg Thread Starter Moderator MASA Contributor

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    thats what i meant, but we cant assume that they are extended to use light... they can be feeding from the water column or engaging in aleopathy etc

    hmm sounds like i have to test this :)
     
  19. MistaOrange

    MistaOrange

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    I smell an experiment coming!!!!!:tt2:
     
  20. dallasg

    dallasg Thread Starter Moderator MASA Contributor

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    kinda like a SPS tank built for NPS....

    well i have all the equip, now to research 1% light level
     
  21. MistaOrange

    MistaOrange

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    How about blocking light or use a filter?;)
     
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