I have an old jacuzzi, about 10x6x6 feet and I want to stock it with a bunch of cool freshwater fish. However I need ideas on how to clean the damn thing. There's a lot of muddy water at the bottom and the damn pump does not work (stupid thing drains water from the top), I can't figure the best way to clean the last inch of muddy water. It's too shallow to be drained via hose. Here's a pic. Thanks!