When the actinic go on there's almost like fluorescent speckles on it. I haven't tried touching it or anything. I try and let everything develop and go its natural course if I can. They came out of no where about 2 weeks ago. I thought maybe it is some kind of cyano because I had a outbreak a couple weeks ago and it is tamed now. Also it is only on that piece of rock.
If it helps
Am-0
Nitrite-0
Nitrate-15 (water change today)
Phos-.25
All tested yesterday. Was on vacation for a week so the numbers had a chance to rise a bit.
The weird thing is I haven't found a thread close to this question. Again, I appreciate anyone's input.
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