API® Melafix is an all-natural antibacterial treatment and remedy. It is extracted from tea trees. It will not adversely affect the biological filter, alter pH, or discolor water and is safe for invertebrates. It is safe to use in combination with Pimafix.
Directions for use are on the bottle and the cap itself is a dosing/measuring cap.
This is a single 237ml (8oz) bottle and will treat 470 gallons (1,779 litres)