If you are worried about ich,
the tank transfer method works for me.
Basically, every 3 days you change the fish to another tank/bucket. For a total of 15 days. I put them into the DT on the 16th morning.
During two of those 3 day cycles, I add prazipro to rid the fish of parasites.
Read up about it here:
http://atj.net.au/marineaquaria/3daytransfer.html