Risk of low oxygen?

[Dkmoo]

Hi all,

This has never been a concern before bc I have a skimmer + chaeto fuge. But, recently I hooked up the skimmer to a recirculating co2 scrubber which basically turned the main source of air exchange into a closed loop. So now should I be concerned with low oxygen? Also i removed all chaeto from fuge bc im in the middle of a vibrant treatment.

 

[lapin]

I too would be concerned about the vibrant causing a low oxygen situation. Maybe keep the cabinet doors open?

 

[Dkmoo]

Thx, maybe I open the co2 scrubber loop to open air once a few days