What is this? Cyano? Diatoms?

Discussion in 'General Discussions and Advice' started by ANiMOSiTY, 24 May 2014.

  1. ANiMOSiTY

    ANiMOSiTY

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    Hey reefers!

    Anybody have an idea of what this is?
    It started as Diatoms, I think.

    It basically takes over the whole tank during the day and dies off at night once the lights are off.

    The strange thing is the colour. I've never seen purple diatoms?[​IMG]
     
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  3. irie ivan

    irie ivan MASA Contributor

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    Cyanobacteria
     
  4. Blue Reefer

    Blue Reefer MASA Contributor

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    Thats cyno.
     
  5. D3m0n369

    D3m0n369

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    Whats the best way to deal with cyano? I managed to get it off my rocks, now its starting on the sand. Feels like i am fighting a loosing battle.
     
  6. irie ivan

    irie ivan MASA Contributor

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    I have a standard bulletproof "protocol," which is a bit of work, but guaranteed to work. The cyano is most likely due to excessive nutrient levels, combined with possible age of globes / too much red light being admitted and possibly insufficient flow..

    Hereby some advice given to a fellow reefer to aid him in getting rid of his, Don't know your system volume, simply apply the numbers as a percentage of watere volume relative to your tank:

    http://www.marineaquariumsa.com/new-members/35913-big-glass-box-pour-money-into-4.html#post834727

     
    Last edited: 24 May 2014
  7. ANiMOSiTY

    ANiMOSiTY Thread Starter

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    Thank you gents!
     
  8. jclaas

    jclaas

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    Switch your bulbs off for one or two weeks and you will see that it dies off. Then once you know what your nutrient levels are and if they are ok then it must be flow and old bulbs.
     
  9. ANiMOSiTY

    ANiMOSiTY Thread Starter

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    I'm running a custom LED setup, so no old lighting bulbs to worry about. Does temperature have an effect on cyano?
     
  10. irie ivan

    irie ivan MASA Contributor

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    Yes temp does have an effect. Please elaborate on the LEDs you are running. Colours, Wattage and power %. Lighting does contribute to cyano, but it is not the cause. Get to the route cause before switching off the lights. Route cause = excessive nutrients, only once this is addressed do I advocate the darkness thing to get rid of as much of the spores and remnants of the cyano.
     
  11. ANiMOSiTY

    ANiMOSiTY Thread Starter

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    72 x 3 watt BridgeLux LEDs
    50% 10000K White
    50% Royal Blue
     
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