Roto,
You asked "Eggheads do they know their stuff?", well I would like to ask if you know what you are talking about. Do you have any first hand experience of using these chemicals for the treatment of fish? or have you seen any fish mortalities or damamge to gill rakers or water pollution which can be attributed to the products Graham advised upon. You are not taking the product and discussing it or the concentration of it or the amount used....but one of it's component ingredients and moveing the goalpost on your argument It's easy to do a google search and find a paper by any number of "qualified" members of varying distinction about any subject that springs to mind, and some will be for and others equally convincing against but the best way of qualifying an insinuation is by experience, either taking part or observing the administering of the product and the amounts used along with taking water samples, checking ph levels, nitrite and nitrate levels, disolved oxygen levels, watching the fish for irratic behaviour consistant with distress and monitering them regularly throughout the products use. As I and others have stated we have used these products in the treatment of fish in controlled environments and have found it to do as was expected, I have also used Klin-Ik and not observed any problems. What do you use on any wounds or sores on fish you catch, is it a product with no papers produced by university grads or profesors or has no one thought to test it enough for ill effects on fish.