I have 11 tanks going right now. No chance for me to keep it up without a python. My tanks are all in the living room, family room, kitchen, nook so there are sinks close by. After you get a python, you're going to wonder how you ever managed without one.
We have 5 tanks going right now, the largest at the moment is the 75g, then 55g and a 5.5, 4.5, 2.5 nano. The small tanks are easy peasy, the bigger ones just take time. We have it down to a science at this point.