Water Gardening: pros and cons of external vs. submersible pumps, 1 by silverfluter

silverfluter wrote:
Here is a close-up of the pump inlet and the attachment for the filter medium. When the tadpoles were very small, I think a few of them found their way through the medium and were pumped up to the bog area. But I also saw many swiming in and around the medium feeding on algae... but they were not sucked into the filter. The large surface area reduces the flow or intake pressure of the water flowing through the filter.
Aggie... you will probably have ups and downs with the algae until the pond balances out... that might take a while. It might help to get some microbial critters from some good lake or stream. That will expedite the process I think. It seemed to help our pond. Hope the pics help... Tom