bacteria bloom

  1. Dave Fryling

    What Is This Jelly On My Driftwood?

    Started a new 12x12x12 cube (shrimp tank, only my 2nd tank ever), and have unwittingly grown (?) this on my driftwood. It's like a really loose jelly, comes off and vacuums up easily–but has re-grown and is...well, ugly. Perhaps harmful? Is it some sort of solidified bacterial bloom? Is it...