Yess.. Now I remembered. Okay, so I do 15% water change and add artemiss? I have no bottle.... any thing else I could use Mr T the loach ?So you would need 1,25ml. With like an insulin syringe that is easy to do (they sell those at the pharmacy) but otherwise you have to dilute some of the Artemiss in a bottle so it is easier to dose. I think I did those calculations already for you in a previous topic?