11-01-2015, 01:20 PM
I need some help fellas. I have a 3000 gallon cistern that provides water for my house via rainwater catchment. It's 12' in diameter and about 4-1/2' deep. I'm trying to figure a way to clean it that doesn't require it be completely drained (leaving us without water until we get enough rain to fill it again) and I'd like to avoid climbing in to it so I don't accidentally damage the liner. I only have access to the tank at one point, a 2' X 3' hatch at one side. I've been thinking of some sort of venturi swimming pool vac with a wand long enough to reach the far side of the tank. Anybody have experience with such a tool or any suggestions of a better way to proceed? Not hoping for spotless, but just getting the visible accumulation of algae or whatever the aquatic dust bunnies are rolling around in the tank.
Phil
Phil