My sick Koi are put onto wet airblister-foil. Towels, even wet ones, i donīt consider to be useful. The smooth, damp airblister-foil damages the mucous membrane of the fish far less than any other surface.

Cyprinocur A is applied to the fish directly from the tube or by using a spatula. Try a coating of approx. 1-2 mm, thicker layers tend not to adhere as quite as long.

One week after a single application.  The wound is healing up from the inside, the fringed lips of wound have vanished.  A second application is recommended.