Hi all. Had a little peak the other day at my filter box, as you do to see hows things are getting along.
Where the water flows over one part of the plastic filtration system there are literally hundreds and hundreds of tiny little worm type things clinging to the plastic in the flow of the water. Brown in colour.
As I wonrdered what they were I scooped them all up, well most of them, and had a look, put them in the pond and I think the fish ate them (goldfish, comets, koi).
I them looked the day after and they are back again, same amount as before. Is this a good thing or a bad thing, where are they coming from?
My pond water is very clear, the fish are happy, I dont have any issues thus far.
If they are clinging on to the sides of the filter, then id suspect its some form of leech, but dont worry nearly all leeches in the UK are harmless to fish and instead eat of plants. Dont worry to be honest.
They are either leaches or flatworms, but either way neither are harmfull and infact both of these generaly consume algae as their primary diets so they do actualy help your pond. Plus some flatworms and leaches even consume waste food and detritus particles and so help the pond further by being natural filters