the nitrogen was released all at once and displaced the oxygen in the water, killing the fish. Fountain-like aerators placed in the water solved the problem. For the Caldwell pond, Davita said ...

"You set up the pond as an ecosystem with fish and plants and it regulates itself," Ms Eastwell said. "It has a nitrogen cycle where the fish produce ammonia, which turns into nitrites that ...

which happens with nitrogen loading. The biggest problem at Swan Pond isn’t macro algae, it’s the oxygen problem. There’s none, so any fish and animal life there is dead.” Howes said these ...

Aquaculture wastewater, rich in organic matter, nitrogen and phosphorus, poses a significant environmental threat when ...