I am sure a 12v pump will work and it will depend on amperage. But the cost of solar cell is so expensive and ugly to be mounted above the pond.

Maybe I should just wire my house with solar panels and make it greener.

I interpret your question as being that you have too much flow of water from your pump. I've set up a number of ponds and pumps, and actually one way to constrain the flow is to simply decrease the diameter of any pipes attached to the output side of the pump via a step down attachment or attach a plastic tap/faucet between the pump and the pipe. Irrespective of what power you are consuming if you constrict the flow it will reduce somewhat. It is also a lot safer than mucking around with the electrical installation.

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StumpyPete



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I think you need an SCR to this. Essentially you want to keep the voltage the same but vary the wattage that is delivered to the pump by controlling the current.

The safest thing to do is to build a bigger pond to match the pump.

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Wake up every day that would be a start.

I was thinking of two of these

http://www.talcoelectronics.com/p-62...lar-panel.aspx