I bought a $29.95 water vacuum at Home Depot and love it for vacuuming out the bottom of my sump when I do a water change if need be. Actually, I had a carbon bag made with a nylon footie that has turned hard and had to get the water out of the sump and then almost hammer it out of a section I had placed it in between the two sides. As the bag broke, this vacuum which only holds 2 1/2 gals water (by the way, you must take the filter out to use the water vacuuum) did a great job of vacuuming up the debris. Just wanted to share that info. Also, does anyone know whether red hermit snails could be killing my turbos??? I just ordered 40 and see lot of empty shells. Seems the hermits are sitting on them most of the time. Thanks!!