I was going to do TTM this time since I have a 6 line ... no rock during TTM. Was going to go from one 20 to the other every 3 days. All 5 fish in same tank then after 12 days (or I guess 13-14 since I'll have to clean and let the tank dry one last time) split them between the two tanks for the remainder of the 3 months but my seeded media is in my current system ... so not ich free. That's where I was going to add the rock ... but wondering if I could treat the actual rock separately or if it would even work. I wanted the CP for this time originally but after reading about the 6 line being sensitive to it I decided to just go with TTM for everyone and not just the wrasse. I'll use the CP for future QT and illnesses. And I'll bring yours Saturday if that's ok ... unless you need to go ahead and meet up before then.