Originally posted by Cary Martin:
...In other words, 100lbs of warmwater fish will consume 3 lbs of oxygen per hour.
Great post, Cary.
So my Dad's pond is currently carrying over 250 lbs of fish, so the demand is about 7.5 lbs of oxygen per hour. So my Kasco 3/4 hp. surface agitator is rated to produce 2.2 lbs of oxygen per hour, which I use only at night. I must be getting some oxygen from the circulators, but other than that the fish must be primarily consuming residual oxygen from photosynthesis the previous light period. Very interesting, and a little scary too. Maybe I'm walking a little closer to the cliff than I thought. Is there an equation for how many pounds of oxygen a rooted, and suspended plant community will produce per hour? Evidently more than 7.5 lbs of O2 per hour in a .15 acre pond.
