I will try again, one last time to post. A 5 ga. bucket would suffice for a small pond. Get a common deer hopper, or what ever you conjure up for larger ponds. It appears to be made of plastic, therefore not heavy. Probably mounts with a rubber gasket and bolts from inside the hopper and thru threaded inserts in the top of the unit. You will drill a large hole thru the hopper and install a funnel. There may be a backing plate for support, and to hold the funnel down.