I will agree with Lija 100% I am also not a fan of keeping pac's in this way,
Keeping the temp at the proper levels is critical. 80 to 84F during the day and 75 to 78F at night is the best for young ones.

If kept in too cool and too moist of conditions can cause edema (excess fluid under the skin) and lots of other heath issues
that will shorten the life span of your frog.

Here is the care sheet for these frogs.
Pacman and Horned Frogs - Ceratophrys - Care and Breeding

Good luck