Good or bad?

Discussion in 'New to Saltwater & Reef Aquariums? Post Here' started by gdfpm1247, Jan 12, 2018.

  1. gdfpm1247

    gdfpm1247 New Member

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    Looking for identification. This has been moderately spreading across the sand bed. I haven’t messed with it much. It looks to be a hard algae like coralline but not sure? Anyone have any ideas? Thanks in advance![​IMG]
     
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  2. hijinks7

    hijinks7 Active Member

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    It looks like cyanobacteria. Not enough flow and too much nutrients in the tank. You can try a 3 day lights out period and cover the tank with a blanket so no light gets in from the front.
     
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  3. Tallison

    Tallison Active Member

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    Looks to be Cyano
     
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  4. Big G

    Big G Valuable Member R2R Supporter Reef Squad R2R Excellence Award Build Thread Contributor

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    Looks like cyano. Only way to be sure is to put it under a microscope.
     
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  5. jsker

    jsker Reefing is all about the adventure Staff Member Team R2R R2R Supporter R2R Excellence Award Build Thread Contributor Article Contributor Partner Member 2018

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    Cyano, check and reduce your white light spectrum to 5 hours total daily;)
     
  6. gdfpm1247

    gdfpm1247 New Member

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    Ok thank you all very much!
     
  7. gdfpm1247

    gdfpm1247 New Member

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    Should I siphon it up during a water change? Or just leave it with the reduced lights?
     
  8. I3enny

    I3enny Member

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    Suck it out and watch it grow back in a few days... Leave it in and watch it spread over everything!
     
  9. mjlash22

    mjlash22 Well-Known Member R2R Supporter Build Thread Contributor

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    Phosphates and nitrates are probably high. Have you tested recently?
     
  10. Lninwa

    Lninwa Active Member

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    Is your tank young?
     
  11. Reef-junky

    Reef-junky Active Member

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    Are you running a skimmer? Light out and skimming is the way to go. You need more flow for sure.
     
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