I would never suggest to use this product instead of qting fish. I think this medicated food is a crutch to allow your fishes health to improve enough to fight off the parasite on their own. I don't think it will ever completely rid a tank of ich and the manufacturer doesn't claim that. As with any fish that survives an ich outbreak in a DT it's the fishes health that prevails and allows its own defenses to fight off the parasite, this food should improve their health and give them a better fighting chance. You say there is a lot of data that suggests that it doesn't work 100% of the time, this may be true but I have never seen it. I'm not sure that we're talking about the same product since you call it an herb concotion, its active ingredient is actually phamacutical grade medication, chloroquine phosphate (not an herb). The company was created by a doctor and he is following the recipe that sea world uses so this isn't something brand new to the industry. I've done hours and hours of research and Mark C is the first person to ever speak negatively about the food saying that a breeder he knew it tried it and it didn't work. What data are you talking about? If you found something that I didn't I would like to read about it please. I'm testing the product myself but I also want other people to test it too, that is the purpose of this thread. Please note the theme of the thread, and the question marks, I make no claims that it works but I want to find out, that was the purpose. So I guess we're in agreement there, because testing it is exactly my plan. Again, I'd never recommend not quarantining fish. But if this is effective on any level it can help with those newcomers that do come down with ich.
The anti bacteria food I would assume has medication in it for both but I really haven't looked in to it yet, I will though. The food does not have enough medication in to effect the entire tank, I do know that. The amount that it would take to affect an entire tank is far more than what would be mixed in the food.