I just got a python finally. I've been using the aqueon self-primer with the bulb to squeeze. It was a heck of a time refilling constantly, so I switched . My question is that I used to just save my last bucket for cleaning out the filter media- pads, carbon, biogrids, and sponges. How does that work with the python? I don't want tap water mixing with my tank water in a bucket under the drain part or anything. Should I just get out my old water changer and clean them? How does this work, Python users?