I've noticed some of the RES in my pond have fungus growing on their feet and around the edges of their shells. I can't catch them, as they're wild and canny. The pond is large. I know that adding salt to the water helps, however this pond is many hundreds of gallons (don't really know how big) and I doubt even a whole container of salt would be enough.
Anyone have any tips for me?
Anyone have any tips for me?