So here's my dilemma, would appreciate any guidance from you guys. I have a 125 gallon fowlr set up and I'm upgrading to a 312 gallon in June, in the interim the 8 fish I have I'm putting in a 40 gallon breeder because I need to get the 125 they are in ready to be a sump for my next system. Except for the Huma hes going in a 20 gallon by himself so the other fish aren't harassed being in so much a smaller tank with him. I've had suspicions of ich because of white spots I have seen on my hippo tang, I have sent a video of her to a knowledgeable fish medic on this forum and he identified the spots as mucus plugs, which was a relief, although he said Ich could be present and possibly the cause of the plugs. On and off now I see white specks on several of the fish, and pretty clearly flashing behavior also although the spots go away quickly like in a matter of hours after I see them. My question is should I just treat all the fish in the 40 breeder with copper even if I can't confirm ich? I would like to know that they are all disease free before introducing them into such a large system, id rather take the ich eradication route than the ich management if possible, I'm planning a high intensity uv sterilizer and will be strictly quarantining all new fish for at least a month going forward. On the other hand I know medication is stressful and don't want to do that unnecessarily or be counterproductive in my attempt to keep them healthy. Would really appreciate any advice, I have the 40 filled with rodi circulating with a power head and heater, I'm planning to move them next week either way I go