Lights and pH??

Discussion in 'Reef Lighting' started by NASAGeek, May 21, 2015.

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  1. NASAGeek

    NASAGeek Eyelash Blennie

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    I have noticed my pH varies cyclically through the day and night.... it gradually rises from 8.0 up to around 8.16 as the lights are on.... then it gradually drops back down to 8.0 when the lights turn off. The temperature in the tank is constant within 0.5 degrees throughout the day and night.

    Why does light change pH???

    Curious.

    Mark
     
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  3. Billme

    Billme Eyelash Blennie

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    Photosynthesis reduces co2.
     
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  4. Mr. Bill

    Mr. Bill Native Floridian

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    +1

    FWIW, a swing of 8.0 - 8.16 is highly negligible, and certainly far less harmful than anything you might be planning to "correct" it. :D
     
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  5. civiccars2003

    civiccars2003 Great Blue Whale

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    Dont sweat it. Not much (if anything) that can be done.
     
  6. NASAGeek

    NASAGeek Eyelash Blennie

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    Awesome... Photosynthesis makes sense... definitely was not thinking of correcting... I was just curious and wanted to understand what was happening. The tank is doing great.... no algae... rock solid parameters.... corals look good... fish healthy... not going to change a thing!

    Thanks much... understand now
    M
     
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