Purple Tang Advice needed

[Tracey2]

He eats everything, nori and other seaweed, mysis, brine, flakes, pellets. He has another 3 weeks of hypo and the paraguard was before the hypo. I have vitamin c on order, should be in tomorrow but I do soak his food in selcon and zoe. Could I give him some sort of bath before the move?

I am setting up a new tank and my sump is 150g which has been cycled for awhile now and is at the samy hypo salinity, I was going to put him there with a few others I have that are at the same stage in the hypo treatment, he would then have a bigger tank but would have to meet new tank mates, not sure if this will be less stressful or more stressful.