Would you need aeration under a cage with so many fish in it, or dose the pond have enough O,2 for the fish if you put them in 8 to 10 feet of water? The cage lid would you use a solid top for shad or netting?
It all depends. Remember its not the number of fish that is concerning with regard to dissolved oxygen levels. It's the total mass of fish, or biomass. And there really isn't all that much biomass involved. One of the reasons I stated in my post to put a 4 ft deep cage in 6 ft of water was to assure water flow through the bottom of the cage. And its nice to have extra cages so that you can pull one out and let the algae die off from that cage while using the other to house fish. If you're planning to do it on your larger fishing pond, and you assure the netting of the cage allows water flow thru then I don't believe dissolved oxygen will be an issue.
