Is it okay if your hermit crabs chirp?

Is this okay for my hermit crabs?

• I have a heat lamp on top of the cage. Its soil for bedding and bark chips for humidty. But i also have a complete different cage within this cage..only because i added 2 more and i don't want the old ones to kill the new ones..how long do they have to stay seperate? i have 2 heaters attached to the side..and 4 hermit crabs in a 10 galloon tank.The tempertaure is 70 degrees but the humidty is only 40% and dropping what am i doing wrong?

• Answer:

  Usually soil is not a good substrate cause it's not sterile unlike sand or coconut fiber. Also it's ok to let the new hermits to meet the old ones just watch them just to make sure nothing bad happens. Lastly the humidity's got to be higher I reccomend using plastic to cover the tank lid to increase it.