I should break the news. Chlorine is very rarely used any more. Now most places(even the boons of NH) use chloramine. Chloramine is chlorine fused to ammonia(NH2Cl). Thats so it wont evaporate(and stop protecting the water) like it used too.
I hear that if you use an aeration stone in the water its supposed to evaporate chloramine, but I don't see how. I just use "Prime" by SeaChem. it uses "complex hydro-sulfate salts" and I've E-mailed the company about the dangers of that to my "aquarium plants", They responded with saying: "this is a very common question, The answer is only if you use more than the required dose."