Our group is developing Aquarium system that replaces the use of test kits, basically we would use sensors to check the aquarium instead of using test kits to determine the chemical level.
Our problem is that we researched about nitrite, nitrate, and ammonia and their price is very expensive. But we found out that ammonia can be determined by pH level.
Any advice what sensors can we use instead of this expensive sensors(nitrite, nitrate, and ammonia), but measured by aquarium test kits.
sorry for my bad english, any advice is gladly accepted