ID brown growth on frag racks

[Martingale]

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.

 

[vetteguy53081]

A substance known as chryophytes and you will need to remove rack and scrub in a container of water and peroxide using a firm toothbrush or similar

 

[Martingale]

A substance known as chryophytes and you will need to remove rack and scrub in a container of water and peroxide using a firm toothbrush or similar

That's what I was thinking but I don't have a microscope on hand. I also forgot to mention that I had tried Waste Away without much luck, and that I do use GFO to control phosphates.

My main concern with just scrubbing it off as-needed is that I've been doing this for a while now already. Luckily it doesn't seem to be able to compete on the rocks or the sandbed. It reads like dosing nitrates might be a good fix for chrysophytes?

 

[vetteguy53081]

That's what I was thinking but I don't have a microscope on hand. I also forgot to mention that I had tried Waste Away without much luck, and that I do use GFO to control phosphates.

My main concern with just scrubbing it off as-needed is that I've been doing this for a while now already. Luckily it doesn't seem to be able to compete on the rocks or the sandbed. It reads like dosing nitrates might be a good fix for chrysophytes?

Waste away won’t do much with this. Reduction in white intensity and increase in flow will help as will ninja star snails, pitho crabs and chiton snails