I never leave them in their delivery cups. They are bathed in a diluted Unflavored Pedialyte solution and then moved to their new setup. Upgraded as needed
I use Exo Terra tanks, Zoo Med Naturalistic Tanks, a Rack System by Vision, and medium Reptile Carriers. Oh and a really Nice Tetra Fauna Tank that GABF is in. I use Coconut Fiber for substrate. Paper Towels if they are ill. Always provide a water dish that is shallow and appropriately sized to the frog. I use Zoo Med or All Living Things UTHs on the sides of every tank and keeper. Heat lamps made by Fluker's that have a dimmer switch to dial in the temp and light output. Always cover the sides with some kind of background. Plastic Wrap over half to 3/4 of every screen top.
Rack System is heated by heat cable and that is controled by a Thermostat.