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Water Quality  (page 1)

One of the great breakthroughs in the keeping of marine life in an aquarium started when a better understanding of the nitrogen cycle came about almost 3 decades ago. Prior to that, saltwater systems were just looked at as being similar to freshwater systems except salt was added to the water. This reasoning caused hobbyists to start their tanks as they would a freshwater tank and as a result any new fish they added to the system would initially die.

Water Cycle
This death of fish added to a new tank was called "New Tank Syndrome". Fortunately eventually it was realized that what was actually killing the fish was the ammonia that was being produced by the fish themselves, which was much more toxic in the high pH environment of a saltwater system. Over time through trial and error it was determined that if hardy fish were introduced slowly and they survived the initial high levels of ammonia, eventually a population of bacteria would become established that would convert this toxic form of ammonia into less toxic nitrite and eventually nitrate.


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