Quote:
Originally Posted by tytown
An hour in and I see no noticeable change in fish energy.
Threw some nori in for fun and it was the usual frenzy.
Total volume is over 500 gallons so I'll give it another couple hours. My sump turnover is around 8x per hour which could be a significant source of oxygenation but I would assume that with the skimmer off the DO would drop some...
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Are lights off? if you have your lights on and have algae, you would be getting O2 from photosynthethis from the algaes in your tank.