I noticed some flat worms (reddish-brown, 1/16 inch, red eyes) on my glass a couple of days ago. The 6 line wrasse and green chromis were picking at them but not in a feeding frenzy by any means. They have disappeared from the glass and I don't see them on any corals. I have done nothing but I am prepared to siphon them out if I see them again.
Next (and I assume related), there are alot of white structures the size of sesame seeds on the rocks. These are pretty well attached and cannot be siphoned off. They can be removed by scraping them with my finger nail but it is not going to be easy to remove them individually from the tank.
What are they? Are they are problem? (Duh, I only have problems now!) How best to eliminate them?
Appreciate any advice.
Next (and I assume related), there are alot of white structures the size of sesame seeds on the rocks. These are pretty well attached and cannot be siphoned off. They can be removed by scraping them with my finger nail but it is not going to be easy to remove them individually from the tank.
What are they? Are they are problem? (Duh, I only have problems now!) How best to eliminate them?
Appreciate any advice.

