OCTOZIN is active for up to 3 days after the last day of use.
Although internal parasites are destroyed instantly, external signs of improvement to the fish may take up to 7 days.
Suitable for tropical freshwater and coldwater aquaria.
Available in:
21 tablet (3 day course for 150 litres)
200 tablet (3 day course for 1500 litres)
See bottle / box leaflet for further instructions