how long should fish float in bag?

How long do i float my bettas bag in the tank for?
How long do i need to float the bag with my betta in it in the tank?

and how long do i wait before feeding him?

Fast answers would be appreciated
30 min. if you do it for longer it won't hurt them any - it makes sure that the water temp is the same because they will die from shock. ALWAYS make sure your water for your fish (when changing the water) is the same.

I also advise that if you switch your fish from their bowl into a holding container that you should put the toilet seat down :) my one fish flipped right out of the fish net into it once.