Hi i have recently treated my tank with Anti white spot no 6 from interpret. It's a two dose treatment. I did a dose on sat and second dose on day 4 on tues this week. Everyone has responsed well and no whitespots. I had the room temperature at 27C and added a powerhead to increase surface breakage. I am just wondering what i should do now as the tank is due a water change. I heard that the medication kills the ick at the free swimming stage which is why i think you treat when you see the spots then four days later to catch the free swimming stage. I was going to do a 75% large water change tonight to remove hopefully a large amount of the free swimming parasite. But at same time will i not take half the medication out. The bottle says redose if you want in 7days time. I was wondering should i not readd 75% of the medication back in when i do the water change, even if the bottle doesnt say too?. Also i have seen some stringy white pooh coming from the new fish i have had for about two weeks. She is behaving normally but i know she is the cause of the ick outbreak. Should i treat her for an internal bacteria. I am worried about all this medicating and how it affects my fish i also wanted to put some melafix in as my large black moor has a little wound on his gill which he doesnt seem to be fuss about i just want to use some to help any little wounds cause by the ick parasite. What should i do first?