Hi,
Has anyone encountered small bubbles apearring on the surface of live rocks (have these rocks for at least 2 years and notice this only after rescaped)?
Tried brushing them off but it appear again and again....The strange thing is that only those live rocks that are nearer to the water surface have that. My return pump and wave maker do not produce any fine bubbles though. Anyone experienced this before and managed to solve it please share...