Hey I am setting up one of these. This is probably a dumb question but the filter has 3 chambers, and the intake pipe takes the water up there and then I am assuming it sprays into the chambers through the pipe which goes across and has holes in it, and then flows out that outflow pipe which has a sort of flat end, back into the tank. When I turn the filter on, how do I get that flow going? Does this make any sense at all?