Ponds and pumps

Question:
Is it possible to have 2 ponds running off 1 filter & 1 pump?
i want to add a second pond ,but i would like to know if it is possible to use just 1 filter & 1 pump ? if so how do i do it or do i need to use 2 pumps & 2 filters i should also say that i want to run a waterfall flowing down into the bottom pond from the top 1 any info would be much appreciated many thanks

Answer:
I suppose it is possible. You would have to use an inline (out of the water) pump and somewhere in the hose put a Y so each pond could have water moving. To get two waterfalls, you would need a HUGE inline pump, but they are made, I know. You could use one bead filter that was also out of the water. You are looking at lots of dollars. It would be cheaper to use two pumps, I think.
That idea of having one pond flow into another one is very very difficult to do. I built ponds for 20 years and when doing that sort of thing, I made each pond a separate entity, each with its own pump/waterfall.

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