I have this brown slime-like goo that grows on these frag racks, and has been a real nuisance at snuffing out my zoas.
It is slimy to the touch and doesn’t brush off very easy. It is never very stringy and doesn’t retain or produce any bubbles. Chemi clean has never affected it. My nitrates test at 0 and phosphates at 0.03ppm. I do use an algae turf scrubber. I had also done a 3 day black out and it generally seemed unaffected.
I had an empty frag rack that I was dipping in full strength peroxide to clear this stuff off and it still struggled to kill it. I eventually just soaked it to clean it up.
I have upped my feeding to try and raise nitrates to a more detectable level, but I’m out of ideas beyond that.
It is slimy to the touch and doesn’t brush off very easy. It is never very stringy and doesn’t retain or produce any bubbles. Chemi clean has never affected it. My nitrates test at 0 and phosphates at 0.03ppm. I do use an algae turf scrubber. I had also done a 3 day black out and it generally seemed unaffected.
I had an empty frag rack that I was dipping in full strength peroxide to clear this stuff off and it still struggled to kill it. I eventually just soaked it to clean it up.
I have upped my feeding to try and raise nitrates to a more detectable level, but I’m out of ideas beyond that.