5: Big bubble under rock.
Is this bad ?, what can I do to get rid of the bubles ?
6. Bleached corraline- Possibly cyanobacteria for the black growth
Is the cyanobacteria bad ? and if so how to get rid of please.
9. Spirorbidae worms- they are shelled filter feeders
are they good or bad ?
and thanks j21kickster, as usual you are most helpful...
:jumping: :yes: