The little clear bubbles are air bubbles possibly co2 or nitrogen also. Can be from air getting trapped in the biofilm or created (co2/nitrogen) during biological process. Certain dinos create them as does cyano but doesnt look like an issue here.
The little clear bubbles are air bubbles possibly co2 or nitrogen also. Can be from air getting trapped in the biofilm or created (co2/nitrogen) during biological process. Certain dinos create them as does cyano but doesnt look like an issue here.