The Final Demand-Intermediate Demand (FD-ID) system replaced the Producer Price Index (PPI) Stage-of-Processing (SOP) system as PPIs primary aggregation system with the release of data for January 2014. The FD-ID system expands coverage beyond that of the SOP system through the addition of services, construction, exports, and government purchases.
Ammonia Levels. Ammonia Levels. Ammonia smell in urine means possible health dangers, especially to rabbits. But here's a way to reduce or eliminate ammonia fumes and levels safely and easily.mmonia Levels. Ammonia smell in urine means possible health dangers, especially to rabbits. But here's a way to reduce or eliminate ammonia fumes and levels safely and easily.
Ammonia poisoning is a very real threat to your fish, especially when the tank is new and is still cycling or if the tank has been stressed and the biological filter has been upset or removed. Ammonia stress is caused by two occurrences in the aquarium chemistry. First is the build up of toxic ammonia and nitrite in the water. This directly affects the fish and can have a number of harmful side effects - from increased disease susceptibility to organ failure. The second component of ammonia stress is the displacement of oxygen in the water by the ammonia.