With pumps and chillers operating, water circulating within tanks, and a lot of general activity happening in a hatchery, you may run into the occasional situation where water overflows or a tank leaks. As you walk around and take a look at your tanks every day, be sure to note the water levels. Make sure no tanks are overflowing or that no water levels are sitting too low. If you do notice a tank that has spools with seed string exposed, top off the tank with chilled, filtered seawater.