To be honest, you might lose more fish in qt than ws will kill if you aren’t completely on top of water quality in there. My advice, get some UV sterilizers and 10 micron filter socks to add to display. And can dose peroxide too (think I went up to 20ml per 1300 tank of 50%). To completely rid the tank of white spot, it will have to go without fish for 90 days, plus then anything wet needs to be qt-ed for 3 months to ensure it doesn’t reintroduce it. So managing it might be better, I think my tank has had latent ws since at least 2013, and I only really see it with new fish or if water quality goes down.