Stocking the Medicine Chest for General Parasite Control:
Be aware that there are companies and individuals who are marketing remedies which purport immediate healing just by dumping it into the pond. The labels will say it will cure just about anything and smell good doing it. Label claims such as this should make you wary; for good reason. These products generally don't work. Yet they are packaged and sold in nearly every garden store across this country. Go figure. If you find a product which will do just about everything, don't count on it.
KMno4 - Potassium Permanganate:
Potassium permanganate is capable of doing great things in terms of parasite control, but it is also capable of rapidly killing all your fish if used improperly. This is a poison. The "dip", which is described further on in the Sticky is very effective and is fairly safe because of it's precise nature. PP, when used in a pond setting is only as good as the person using it. Too strong and the fish will suffer and die. Too weak and the parasites will laugh at it.
For it to be effective in a pond the pond itself must be in fairly good shape, clean and free from organics(waste-plant debris etc.). The pond capacity(gallons) must be known. No guesswork on this.
For microscopic parasites excluding flukes use 2ppm KMNo4(potassium permanganate) in a clean pond. Two consecutive days and do not reverse the chemical. Add aeration. Be prepared to reverse the treatment with dechlorinator if you notice the fish are in obvious discomfort. Before you do this treatment for the first time it would be wise to discuss it with someone who has used it professionally.