Needing to add some fish. My BN pleco has gone nuts and started attacking my Sterbai Corys. I am down to 2. Going to trade him out for 2 juvenile BN plecos and restock my Sterbais and need some more Harlequin Rasboras. Was going to buy a 10 gal tank, small heater and use a sponge filter from current tank. My question is on the actual quarantine process. Do you medicate just because? Do you just wait to see if anything is wrong before medicating? Do you do water changes over the 2 weeks? Anything else?