Green crust

Discussion in 'General Reef Topics' started by VT rules, Aug 11, 2006.

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  1. VT rules

    VT rules Bristle Worm

    Joined:
    Feb 1, 2006
    Messages:
    137
    I've got a green, crusty looking substance growing on my sand in one half of my tank. It can literally be peeled. Unfortunately, it comes back after a day or two. Anyone have an idea of what this might be and what is causing it?
     
    VT rules, Aug 11, 2006
    VT rules, Aug 11, 2006
    #1

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  2. Boomer

    Boomer Feather Duster

    Joined:
    Nov 24, 2003
    Messages:
    245
    Location:
    Duluth, Minnesota
    It is probably some type of algae. Got Pics?
     
    Boomer, Aug 11, 2006
    Boomer, Aug 11, 2006
    #2
  3. VT rules

    VT rules Bristle Worm

    Joined:
    Feb 1, 2006
    Messages:
    137
    I don't have any pics handy but I'll post some this weekend. It is dark green in color if that helps.
     
    VT rules, Aug 11, 2006
    VT rules, Aug 11, 2006
    #3
  4. rickzter

    rickzter Torch Coral

    Joined:
    Sep 8, 2005
    Messages:
    1,197
    That would be a great idea. ;D
     
    rickzter, Aug 11, 2006
    rickzter, Aug 11, 2006
    #4
  5. VT rules

    VT rules Bristle Worm

    Joined:
    Feb 1, 2006
    Messages:
    137
    Okay, here are the pics. What do you guys think?
     

    Attached Files:

    VT rules, Aug 13, 2006
    VT rules, Aug 13, 2006
    #5
  6. serotonin

    serotonin Purple Spiny Lobster

    Joined:
    Apr 20, 2006
    Messages:
    498
    Location:
    New Berlin, WI
    cyanobacteria it looks like to me

    It'll be almost like a thick membrane. It will normally go away on its own in up to four weeks or so. You may consider stirring it if you wish. Cyano also doesn't seem to like a high current so if you have corals, keep some flow over them to prevent cyano growth on em'.
     
    serotonin, Aug 13, 2006
    serotonin, Aug 13, 2006
    #6