Hi, I have 2 large clown loach which have black spot (no other fish exhibiting symptoms) and as I have not had a poorly fish before I want to double check that I have understood the instructions properly for dosing! I have Octozin and I understand from the instructions that the tablets are to be put straight into the tank as they are (number dependant upon volume of water). Is this correct? 
Thanks, Jo
Thanks, Jo
