I'm just about to set up my new aquarium and was wondering if I should transfer some of the peat from the box that my gerbils are living in at the moment. Will that help them settle into a new environment quicker, or is it okay/better to use all new stuff?
It depends if you are trying to introduce. If you are only putting in the gerbils you purchased then I would think the familiar smells would help in the transition. If you are trying to introduce, I would add all fresh stuff. It assists in keeping things less territorial.