Tetra Pond Medifin is effective treatment for most common pond fish diseases. Combination of active ingredients effective against bacteria, parasites and fungi. Broad spectrum of activity for best chance of recovery. Supports wound healing by preventing secondary infections. Harmless to fish, plants and filter bacteria. Easy-to-useApplication. Add 50ml of MediFin to every 1150 litres (250 gallons) of pond water. Disease recovery can be advanced by using TetraPond AquaSafe in conjunction with MediFin. Treatment may be repeated after 7 to 10 days, if recovery is not complete. MediFin can also be used as a preventative remedy, during sensitive times of the year such as the spring and autumn. Do not use MediFin in conjunction with other pond treatments, except those in the TetraPond range. Available in 250ml, 500ml and1000ml sizes