Yes, but that’s why modern medicine has developed antibiotics, antivirals, and vaccines. Things where there is a clearly understood biological mechanism for the treatment to be effective. The immune system has an important role in preventing and fighting disease, but what you are describing sounds to me more like pseudoscience than science.
You mentioned Occam’s razor, and applying it to the claims here, what is more likely to be true? That your products can accomplish many things that much research had not shown possible, or that they actually contain known anti parasitic or antibiotic agents? What kind of bacteria can affect both dinoflagellates and ciliates? Or that “RNA, amino acids, and fish pancreas and liver extracts” can kill bacteria and flatworms? These are hard to believe claims. I don’t want to accuse you of lying, and I appreciate that you’ve been responsive to our questions, but I feel like it would be irresponsible to simply believe that these products both have the effects that are being claimed and are made from only the ingredients being claimed.
There was a very popular algaecidal product (Vibrant) being sold recently that was claimed to only contain bacteria and work through similar not-quite-explainable action, when it turned out after an investigation by members of this forum and then the EPA getting involved, that the product was actually a known and already on the market algaecide.
I feel like it’s fair and reasonable to request more evidence of your claims, even if you can’t be 100% forthcoming due to trade secrets.