I just ordered a 3 cm Singapore blue and 3 cm Malaysian Earth Tiger. 3 cm is about 1.2 inches. My question is this, should I put them in Kritter Keepers or should I put them into the 11 cm by 6.5 cm by 6.5 cm cubes ( 4.3 inches by 2.6 inches by 2.6 inches) that I use for slings?