Prime is water conditioner, and works nearly instantly. Think about making a glass of chocolate milk or iced tea from a mix, as quick as the color changes with a stir is as quick as a water conditioner/dechlorinator works. It will work at any reasonable temperature, as far as boiling hot water that is an interesting question, one for me to look in to.
Any dechlorinator labeled as such should remove both chlorine and chloramine. Sodium thiosulfate, which is the most basic and cheap dechlorinator removes chlorine and splits the ammonia/chlorine bond in chloramine removing that chlorine as well. The problem there is that you are left with some level of ammonia, dependent upon the size of the water change as well as the level of chloramine added. Hydromethane sulfinate or a similar compound is added to you better dechlorinators to convert this ammonia to ammonium, which is harmless to fish at levels found in an aquarium.
Bottom line, without getting even more technical to someone new to all this is to use Prime as a dechlorinator/water conditioner.
Most importantly it should remove chlorine and chloramine.
Any dechlorinator labeled as such should remove both chlorine and chloramine. Sodium thiosulfate, which is the most basic and cheap dechlorinator removes chlorine and splits the ammonia/chlorine bond in chloramine removing that chlorine as well. The problem there is that you are left with some level of ammonia, dependent upon the size of the water change as well as the level of chloramine added. Hydromethane sulfinate or a similar compound is added to you better dechlorinators to convert this ammonia to ammonium, which is harmless to fish at levels found in an aquarium.
Bottom line, without getting even more technical to someone new to all this is to use Prime as a dechlorinator/water conditioner.