Hi, I have a large number of small worms, mainly near the top of the Savio waterfall and in the skimmer. They are attached and thriving...what type of worm are they and can you advise what they indicate? I suspect my pond has a lot of organic matter. I want to make sure they're not an issue for the koi and goldfish cause I lost all my fish last year and was told it was most likely due to parasites like flukes. I am doing weekly vacuuming to remove as much algae and organics as possible that results in about a 10% per week water change.
Thanks
Thanks