I just spoke with a research doctor at Harvard Medical. He said while the H2O2 would remove Cl he would not recommend it. For one, the H2O2 you buy in the store is not pure, and is practically impossible to obtain. This research doctor has kept freshwater and saltwater fish, so he has knowledge on hobby in case anyone was questioning his creditably. I would be really interested in finding out what aquarium companies use to treat Cl in their products...Actually, it would probably make me rather upset, since it probably is the same thing!
