They all contain sodium thiosulfate others just have additional ingredients. Most brands are pretty tight about not saying what they contain, Prime for example. For dealing with ammonia released from chloramines most conditioners just change NH3 to NH4 since thats the easiest way to deal with ammonia toxicity. This is only a temporary effect, even prime will only guard against ammonia for 48 hours before they suggest redosing it as NH4 will eventually go back to NH3 given pH and whatever exact compounds they use to do this. Prime I know reduces heavy metals, their toxicity is related to their charge so reducing the charge on the ions reduces the toxicity. There are a couple things used for 'slime coating' all IMO are either marketing gimicks or more harm then good since there is absolutely no reason for a healthy fish to have trouble with producing a slime coat. Many use aloe vera or hydrocolloids for this.Blobfish said:
I have chloramines and like 0.25-0.5ppm ammonia in my tap and I don't bother with any type of dechlor 98% of the time. My water does need to stand for pH to stabilize but after that it goes straight into the tank. At my last location I used it straight from the tap w/o dechlor as well. High organics will bind up chlorine in no time and the filter and plants will deal with the ammonia very quickly. You also have to calculate I dose dry fertilizers so when I do use dechlor its usually the very basic sodium thiosulfate I have mixed. Copper, iron, ect while heavy metals are still essential elements and rather not add anything that tries to make them less reactive. If I do use dechlor its always dosed according to my chloramine levels which is about 1/4-1/2 the regular dose. You have to realize dechlors treat ALOT, regular dose of prime treats 1ppm NH3, 4ppm chloramines, and 5ppm chlorine. The legal limit for the last two are 4ppm in the US. Average levels at a tap are 0.5-2ppm. Then you need to factor in the dilution when you change water. My tap has 1.8ppm chloramines/chlorine reported. After a 50% water change the tank only has 0.9ppm and now a regular dose of prime and pretty much any dechlor out there is 4-5 times what is required. Adding a regular dose or double dose isn't going to hurt anything, I simply don't because its not necessary. I go years between 500mL bottles of prime. I have a pound of dry sodium thiosulfate and I might need more in a decade.
Ph 7, Ammonia 0, Nitrite 0, Nitrate 0. Can anyone see any reason why this would not be suitable for the use of diluting concentrated dechlorinator 
