I've been running around MFK for a few days, but I don't see anyone discussing the vacuuming needs for a massive tank. Generally, with my small tanks, it all just depends on the number and size of fish. But how often, in practice, do you guys with 1000+ gallon fresh water aquariums vacuum them out? How do you even get it done; scuba diving gear? Say hi to your pacus for me, while you're in there! (hope they're not hungry...)