When you change water using a bucket, you add dechlor in the bucket before pouring it in the tank... so, what about when your water is coming straight from the tap into the tank? At what point do you add the dechlor? Before the tap goes straight into the tank, or after, or during? I'm not even really sure how the dechlor works. Does it keep working after you add it, or does it dechlorinate the water the instant it touches it and become ineffective after that?