I have always been careful about putting chemicals in my pond for issues like red fins or pumps on skin. Recently, I saw a product called Koi Pharma which seems to be a kind of koi food used for bacteria treatment. Has anyone tried this before or somthing similar? Would you say it is safer or less safe than medicating a pond?
Here is the link to the product:
https://koimarket.com/products/koi-m...d=koi%20pharma