A reader of my solar pond pump kit page ask a detailed question in the comments as to how to modify her solar pond pump so that it would work better. I think there are a lot of people like her in the situation of being underwhelmed by the performance of their solar pond pump kit, so I thought I would elaborate on how to go about upgrading such a system. Here is a paraphrased summary of the information she gave:
If you are looking for a solar pond pump to replace your existing pump, or simply to add a new water feature to your pond, then you’ll need to be sure that the solar pond pump, solar panel, and batteries are all properly sized to one another. There are many solar pond pump kits on the market to simplify this process, but many of the cheaper kits are not necessarily properly sized.