No, BB dosen`t free float.
1. run your old filter on the new tank along with your new filter. The ole filter has BB in it witch will be needed. Keep the filter media inside wet, I suggest filling a zip lock bag with tank water and placeing it in there. "
2. tank every thing out of your tank except gravel. You can add this 2 the new tank after you add water conditor and fill it up.
3. Have lots of zip lock bags on hang. Fill with tank water and caych your fish with a net and bag them. Rember to acclumate them to the new tank
4. Scoop out old subtrate and add to new tank.
Then add the filter media
36 gallon fresh water