Hi, Im new here. Wonder if I can keep about 6 thats the amount Im about to order in 30x30 cm terrarium. If not, could You be so kind and post the enclosure that might be a good fit? Also, we do have about 20C so I guess Id need a heat mat, right? If so, where to put the mat down or on side? Its my first millipede so I dont want to make mistakes and if You provide me with some info, I hope, that Ill be succesfull. Last question, is there any website focused more on millipedes than here? Thank You very much