Earthworms in filter media
Liner pond was built in February. Plants and fish added in early spring. Rinsed out my waterfall box biofilter for the first time this morning and found lots of earthworms in the mesh media! They were several inches long. There was also quite a bit of muck/sludge. I assume the worms don't hurt anything and may even be beneficial. I also assume that they crawled in through the top of the filter. The filter is 2 layers of mesh mat; some bags of activated carbon on top of that; and some mesh bags filled with scrubbies on top of that. I wonder how often such a set-up should be rinsed (with pond water of course).
This post was edited by AndyPond on Tue, Jul 22, 14 at 0:43