Sterazin P is for the control of gill and body flukes that cause fish to flick or scrape. It also treats internal worms which cause wasting. Sterazin P is safe with pond fish, plants and filtration.
250ml (5 day course for 3600 litres)
500ml (5 day course for 7200 litres)
1 litre ( 5 day course for 14400 litres)