08/06/2026
The quality of the water is very important in an aquaponic system. Some parameters to monitor include: Dissolved oxygen (DO), TAN, pH, water hardness, and alkalinity. TAN is the ratio of toxic to non-toxic ammonia.
These water quality parameters should be monitored closely and be maintained at certain levels for the best performance of the system.
There are two ways to first establish an aquaponics system: with fish and without fish. Starting without fish is faster and will avoid the risk of killing the fish with ammonia poisoning in the beginning. During establishment, levels of TAN, nitrite, and nitrate will fluctuate as the colony of nitrifying bacteria grows.
Read the Extension publication here: https://pubs.nmsu.edu/_circulars/CR680/