In the past I've had 75% of my fish population wiped out from velvet so I'm much more risk adverse, but still too lazy to do a proper full on QT myself hah. Now almost all fish I buy are quarantined or have been from mature systems long term without any new additions. Bay Bridge Aquarium and Violet have supplied a majority of my qt fish that I've had for years, and High Tide more recently with some new special order ones in QT now.
