In addition to some of the failsafes listed above, I sealed the bottom of my stand and added a drain. There is a hose attached to the bottom that runs to the outside. It is the same idea as using a drain pan under your water heater and washing machine. I also added a small drain line through the top wall of the sump. This will handle low flows and avoids having to dry out the bottom of the stand. I have had problems with leaking check valves on the return pump line. If the power goes out the tank slowly drains back into the sump.