For the lesions, I would get the Tricide Neo. I like to use the one gallon size packet, split into 4 doses. Mix one dose with distilled water and put that in a spray bottle. Treat the fish in accordance with instructions, except keep the fish soaking with the spray, rather than putting it in a bath. The other three doses can be put in ziplock type bags in the freezer until the next time they are needed. This allows for essentially the same treatment as normal with much less waste. The unused portion in the spray bottle can be refrigerated until the next dose.
Zone 7 A/B
Keep your words sweet. You never know when you may have to eat them.
Richard