Well i shouldn't really say that i am treating them, just that when i get new fish, i usually add mela and pimafix into my aquarium for the first four days or so just for good measure. Those two natural remedies are supposed to be safe enough for that type of use and was recommended to me by my local lfs for that purpose when i first got into this hobby. I have never experienced any problems using those products, but if they are indeed unsafe for my fish then i'll re-evaluate that practice in the future. I want to learn what i can to prevent injuries to my fish.