sen5241b
Reef enthusiast
What are these bubbles? I blasted them off with a turkey baster and they come back in 20 minutes. There were no bubbles when I first put them in the tank 6 or 7 weeks ago. Don't bacteria convert nitrates to nitrogen gas? I do not see any trace of bubble algae or cyano in this LR. The rock pieces you see in the pic are highly porous and calcareous white coral I found on the beach and cured myself. The other LR in my tank has few if any bubbles like these .