So, I've been doing the old fashioned vacuum/bucket deal since I started and finally bought a water changer! Holy happiness. Question is, even though I only do partial water changes I've been treating all the water with the de-chlorinator. Is this the proper way to be doing it? Like in my 60 gallon I treat the whole tank even though I'm only adding 15 gallons of new water? This is going to cause me to go through a lot of de-chlorinator? Is that the trade off for the convenience? Or should I only be adding a cap full enough to treat 15 gallons?