The term you need to be aware of is Biological Oxygen Demand or BOD. Bacteria use oxygen and BOD is one of the key parameters in waste-water treatment plants. I would dose ammonia versus keeping a large amount of fish. With liquid ammonia, you are in control of the amount of ammonia added and you don't have to worry about disease. Not to mention the bacteria won't have to share the oxygen with the fish.
When trying to culture large bacteria populations in a small area oxygen can become the limiting factor. Air stones, bubblers, etc do not help diffuse oxygen in the water. Their main strength is circulating oxygen-poor water from the bottom of the tank to the surface. A trickle filter would be the best option due to the oxygen exposure.
All that said. An easier option may be to move "seeded" filters to their own container and add a higher concentration of ammonia. You can experiment with how long it takes the filters to catch up. I imagine the waiting time will be for the bacteria that convert nitrite to nitrate.
When trying to culture large bacteria populations in a small area oxygen can become the limiting factor. Air stones, bubblers, etc do not help diffuse oxygen in the water. Their main strength is circulating oxygen-poor water from the bottom of the tank to the surface. A trickle filter would be the best option due to the oxygen exposure.
All that said. An easier option may be to move "seeded" filters to their own container and add a higher concentration of ammonia. You can experiment with how long it takes the filters to catch up. I imagine the waiting time will be for the bacteria that convert nitrite to nitrate.
