My tank has only just got rid of internal bacteria and fungus and now i think they have got whitespot. Quite a lot of the fish are rubbing themselves against the rocks and my red spotted severum is covered in white specks. I have treated the tank with protozin and aquarium salt, have upped the temperature to 82 and turned all the lights out. I have to treat the tank on days 1,2,3 and 6 but i have heard you have to treat whitespot for 14 days so when do i have to treat after the 6 days. Also i have added salt today so when will i have to dose again with salt.