My tank is at the office, so I can't shove my hand in the tank right now. But here's what I do know. When the tank lights are on, bubbles appear underneath the purple film, stretching it out. When the lights are off, the film lies flat.
So is that is cyano
? If that's not obvious enough to tell, I'll try and get a digicam. But if this is cyano
, what should I do about it? Toothbrush? Leave it? My hermits don't seem to have any interest in it.
One last question: the original hunks of LR
with the nice (hard) coralline algae on it are at the bottom of the tank. Should I move them to the top of the rock pile?