LR has a white growth on it and it's spreading! Help

Discussion in 'Live Rock' started by stevenhalkett, Mar 28, 2010.

  1. stevenhalkettNew MemberMember

    Hi, I'm new :)

    As the topic says, I have some kind of white growth on my LR that appears to be growing and spreading, it's not slimy or squidgey to touch.

    Nitrite: 0.20
    Ammonia: .20
    PH: 7.5
    Tank Size: 155L
    Age of set up: Month and a half
    Inhabitants: 2x Fire Shrimp, 2 x Hermit Crabs

    Anyone have any ideas what this could be? Good / bad? The guy LFS said it could be some kind of sponge, but I got the distinct impression that "he just worked there" and didn't really know. He suggested I ask on a forum on internet.

    Many thanks in advance for any advice / help given!
     

    Attached Files:

  2. stevenhalkettNew MemberMember

    Sorry forgot to say, using a hang on skimmer, and we have around 13kgs of LR and about 15kgs of Ocean Rock (Dead Rock)
     
  3. snuggs86Valued MemberMember

    i have the same on my live rock but no idea what it is still. its only on some of my rock but not all of it. i have 10kg of it at the moment.
     
  4. SarrixxValued MemberMember

    Looks like an encrusting sponge to me. If it is it's not harmful to your tank.
     
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