it would be better if you use the anti white spot after raising the degrees to:
first day 28 degrees
second day 29 degrees
but you have to put your fish in a small fish tank coz u need to change half of the water every day.
and you have to close your filter for 3 hours after putting the anti...
if i were you i will keep at least half of the old water as it contains the useful picteria which your fish was living with in the old water and as they traveled for 6 hours they must be tiered.But the main reason is the new water that it dose not contain the useful pactiria.