Hi everyone, I just finished the last of my Aqueon de-chlorinator, before I buy more I wanted to see if you guys think it is a good brand, or should I get another? While on this subject I have always wondered, but felt to stupid to ask When adding the de - chlorinator to the water, do I add it to the bucket each time I fill it with new water? or add it to the aquarium just once for the amount of water I am adding? And, do I need to de chlorinate if I am only adding a little water to top off the water level? Like a couple of gallons to top off a 30 gal tank?