Don't skip regular maintenance, the algae will get you for it. Gravel Vac, don't just top up evaporation. Don't try to stretch a python. The end will pop off and you'll be left racing through the house with it spraying water as you run to turn the tap off in the kitchen. There's no such thing as too many towels. If you want to re-arrange your apartment and you own more tanks then furniture... it's a really long process. Always keep extra timers on hand, eventually you'll change something around and suddenly have a planted tank (or two) and no timer for it. Air driven filters are a beautiful thing, only one outlet and you can run multiple tanks. It's really hard to find compact florescent bulbs in tube shape, stock up. When doing a DIY project there are two things to remember, if there's a spot it can leak it will, and 1/2" hose clamps won't fit the half inch tubing once it's stretched over the valve. Dehumidifiers, a good investment for those with MTS in an apartment. Keep a hair dryer on hand, to un-freeze the windows that are now frozen shut due to the humidity in the before mentioned apartment. Tear down one tank at a time. The most time consuming part of moving a tank, is catching the cory's. (Note this is especially true of a tank with lots of tannis, a lapse in gravel vacs, and bronze cories.) QT tanks are beautiful, rubbermaid works really well, but make sure they're lit enough to be easy to check. Evaporation is a mysterious phenomona, where one tank will lose massive amounts, while another may never show any sign that it occurs. Filters die. There are no warning signs for MTS. Fish tanks and wall to wall carpeting is a bad combination. So is trying to move tanks in the dark. Fishlore is amazing, and here at least people will actually understand the above list.