Porcellionides pruinosus, commonly called powder blues are one of my favorite feeder isopods, they breed quick, move around alot to kick in your reptiles prey drive and its pretty cool to have a blue isopod! I keep the bin half damp and half dry keep them on my own substrate mix topped with oak and magnolia leaves with plenty of bark and wood to climb on. Once a week I top off their pile of Repashy Bug Burger and add a blend of fish foods in a different pile. I add cuttle bone and leaves as needed and add a slice of vegetable (carrot, zucchini on the damp end. Last I make sure the substrate is damp enough and dump in some RO water if needed.