White slime/fuzz on LPS?

[Martingale]

It's only affecting these two corals so far, an acan and a trachyphyllia, and both started at about the same time in the last ~24 hours. The stuff on the Trachy blows off with a powerhead. So far no flesh damage on either that I see, but I'm hoping to avoid that.

It's definitely white, but the filter gives it some color.

I don't dose carbon or anything, and I'm not currently running carbon/GFO. I do have purigen.

I'll post test results on everything as an edit/update

 

[Reefer40b]

Mensentrial filaments, something in the water it probably irritating them

 

[Martingale]

Mensentrial filaments, something in the water it probably irritating them

On the Acan I could agree there, but the Trachy definitely just blows off.

I assume WC and carbon is the go-to then? I have some SPS that are unaffected.

 

[Reefer40b]

the trachy is probably just mucus, maybe detritus has settle on it and thats how its trying to clean itself off. how is the flow on it?