I am looking to purchase one for a ~100 gallon pond and I would like it to be strong enough to make a small waterfall. Does anyone have any reccomendations on a brand?

How high is the waterfall and how many gallons per minute (gpm) do you need? If either of those answers are large, it will require an expensive pump and lots of solar panels to meet your head and flow requirements.

If you are trying to lift under 12′, and about 3gpm, the Shurflo pump might do it for you. It’s just over $100 for the pump, but then you’d need to buy the solar panel for around $500.

http://www.altestore.com/store/Solar-Water-Pumps/Surface-Pumps/Shurflo-Surface-Pumps/Shurflo-2088-443-144-12V-Std-Surface-Pump/p1088/

Some of the less expensive options you may find elsewhere may not have enough power to pump the water up for the waterfall, they may only have about 1′ or 2′ of head capability .

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This is a nice little solar pond pump powered small water feature making use of a natural looking container. Video duration : 0:0:20