I will be moving the fish in my 75 gallon tank to a 350 gallon system over the next couple months. I have not seen any signs of ich since first introducing my tiny naso tang about 10 months ago (been about 8 -9 months since any signs of ich). I also have a small blue tang that has showed no signs of ich since the naso was introduced but the blue tang does have some hole-in-the-head. My question is: Should I still quarantine these guys and treat them with cupramine for 2 -4 weeks? The quarantine setup is a 29 gallon tank so I worry the tangs will get stressed from the limited size plus they will not be the first to go through the quarantine system so, potentially, they could unnecessarily be exposed to ich or other diseases. All new fish will be quarantined for at least 30 days and treated with PraziPro or other meds if necessary though. Any advice is appreciated!