A compound derived from cellulose. It has mucoadhesive properties, and forms a clear viscous gel on contact with water. It is used topically to treat skin ulcers, binding to the wound, topical antiseptics (e.g. betadine or mercurochrome) or dissolved antibiotics, for prolonged activity without being washed off when fish are replaced in water. Like cellulose, it is not toxic, and not an allergen.
Use Powder Gel in thin alternating layers, with 1:10 dilution of betadine, for sustained antiseptic activity.
See short movie, demonstrating the treatment of uncomplicated fish ulcers on TheFishVet's YouTube channel – http://youtu.be/GHJtZRrx8IU