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What is one of the colors on a clownfish? (hint there is a clownfish on the CR logo in the top left corner of the page.)

Inside A Coral Lab


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  1. #1
    MizTanks - Reefkeeper
    Join Date
    Oct 2009
    Location
    U.P. of Michigan.
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    7,561
    First Name
    Jamie
    Awards Photo of the Month - October 2012 Photo of the Month Post and Reply Award - Winner of the first PAR Contest. Monthly Giveaway Winner
    Last edited by jimsflies; 09-23-2011 at 01:23 PM. Reason: added photo
    There's nothing like being a Reefer! www.upmmas.com

  2. #2
    larryandlaura - Reefkeeper
    Team CR

    Join Date
    Nov 2010
    Location
    Houghton Lake
    Posts
    4,788
    First Name
    Larry
    Awards Monthly Giveaway Winner Fantasy Football Champion Referral Award Monthly Giveaway Winner

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    Great article thanks for sharing it with us Jamie!
    Hi my name is Larry and I'm a coral addict!

  3. #3
    jstan - Reefkeeper CR Member
    Join Date
    Sep 2010
    Location
    clawson mi
    Posts
    274
    First Name
    Jason

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    [quote]Measuring light

    In the marine hobby, lighting is a hotly debated subject. To quantify light, the lux unit is often used, which is the amount of lumens per square meter. Although this unit is very useful to quantify lighting equipment which is perceived by the human eye, it is of little value to the aquarium hobby or aquaculture. This is because lux and lumen are based on the green portion of the light spectrum (approximately 555 nanometers), whilst zooxanthellae, as most plants, benefit more from the red and blue portions. This is due to the fact that the photosynthetic pigments residing in zooxanthellae have the highest light absorption, and thus photosynthetic activity, when exposed to red and blue light. This principle has lead to much confusion. Light sources with little green and yellow light such as LED fixtures may seem quite dim to our eyes, while they can have a high output in the red and blue parts of the spectrum. Such a ‘weak’ light source may in fact be quite appropriate for culturing corals.

    Although the human eye may not be a reliable light meter, alternatives fortunately exist. With industrial light meters, light sources can be measured accurately. A common unit of measure for light intensity is the mole or Einstein. Scientists often use the notation

    ---------- Post added at 06:26 PM ---------- Previous post was at 06:24 PM ----------

    and half of what I typed just got cut off........I'll retype my thoughts later

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