Ok, so I used my python for the first time tonight, and I have a stupid question. Do you refill the tank with the python too? I know it CAN, but it is water straight form the tap.... I thought that water was supposed to be de-chlorinated before you put it into the tank. So I drained the tank using my python (which, by the way, has weak flow, and doesn't vacuum the gravel), and then went through the back breaking bucket routine anyway.