Okay here is the problem, upper pond has settled and is leaking out the top when we run the water fall (pump). Former homeowner built the thing and it is all mortared (sp) together. These are preform pools. Contemplating filling the whole thing in with dirt and planting it up. Or does anyone know a way to seal it up without taking it apart? Suggestions please. I love it, love the frogs and the fish and would like to keep it. Help!