Treat fish sicknesses with MinnFinn Natural Fish Treatment. MinnFinn is ideal for enthusiasts with small to medium-sized ponds. One liter treats up to 2,240 gallons of water when treating goldfish or koi. This natural biodegradable pond treatment will help your fish heal from a broad spectrum of issues including parasites, external fungal and bacterial infections, and many more. If your entire pond is overrun with infection or illness, then MinnFinn should be administered to your water body. Fish pond water treatments generally take only 1 hour and are neutralized with the included MinnFinn Neutralizer. Many illnesses can be eliminated in as little as 1 to 3 treatments. The MinnFinn treatment will decompose itself into natural elements, leaving the formula non-toxic, safe for humans, pets, fish, wildlife, and the environment.