i have two baby sulcatas and they seem to be doing great i got them in march and they are growing and eating fine on veggies. so my first question is since they are geting bigger i want to start building an indoor enclouser and would like to know how big it should be. also i have noticed that the bottom of the shell is still a bit soft what can i do to make it harder? i was told at my local pet store to rub mineral oil on their shells and that should get their shells hard is that true?

all info will be much appreciated

thanks