Definitely use bubbler aeration to get good water mixing. Do not overstock too many fish which will keep water quality better. IMO If you have tilapia in Argentina start the pond raising adventure with them. Raise them during the warm season and have pond drained and dry out in winter which keeps the bottom sediment in better healthier condition.


aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management