Follow the directions on the packet. Normally you just add it to the tank because the fish drink the medicated water and the chemicals get drawn through the skin and into the body.
Hi Colin,
Sorry me again
Ive been using Flubendazole the last month to cure a worm issue.
Ive dosed the medication once a week for 4 weeks and done a 75% water change and cleaned gravel / filter pads 48 hrs after. (Got the last water change tomorrow)
First couple of weeks i was still seeing some white poo on gravel but none for the last two until yesterday i saw some coming from one of my cherry barbs
Is there anything else i could try or do?