Please note that the 10 Quart is different than 4 Quart. See prep instructions. BioBedding Hermit Crab is the perfect substrate for your bioactive hermit crab enclosure! This substrate is a unique blend of ingredients designed to jump-start the bioactive environment. It helps to maintain a proper level of humidity, yet retains moisture in a way to easily provide humid hides, support burrowing and foster a community of cleaner invertebrates and beneficial organisms. Tank stays cleaner due to bioactive cycle No substrate changes, which is less stressful on your pet Closer to replicating your pet’s natural habitat Maintains humidity better than traditional substrates How to Prep:  Add dechlorinated, fresh water until the substrate sticks together when squeezed, but no water runs out. Then this bag should be mixed with one 50lb (0.5 CuFt) bag of Quikcrete Play Sand before being added to the enclosure. Add mixture to the enclosure to a minimum depth of 3 times the height of your largest hermit crab. Do not use without sand. Don't want to go to a home improvement store and haul large bags of sand? Check out our premixed 4qt! 10 quart bag measures ~12 x 3 x 14". This is enough for a 20L with smaller crabs or a a 20 Tall with larger crabs. Recommended Animals:  Hermit Crabs Recommended Plants: Air plants and other bromeliads, spider plants, and parlor palm are great for hermit crab enclosures. For plants with large root systems, we recommend using pots with no holes to keep roots out of molter's tunnel systems and for targeted watering. View the plants for hermit crabs catagory Here. 18x18x18 (20 Gallon) Hermit Crab Vivarium Plant Kit 24x18x24 (40-55 Gallon) Hermit Crab Vivarium Plant Kit Suitable for Misted Setups? No. Hermit crab enclosures do not need to be misted when set up correctly with a glass lid. Misting can cause flooding or overly soggy conditions that can harm molting crabs. Bromeliads and air plants can be misted outside the enclosure if possible. Potted plants sunk into the substrate can receive a splash of water when dry. Care: BioBedding Hermit Crab is a naturalistic vivarium substrate and is meant to house a bioactive clean up crew! Stir the surface of the soil every 1-2 weeks with a fork, or if waste is visible. Burying waste allows microfauna to process it quicker. Hermit crabs will eventually eat some of the ingredients in this substrate so providing calcium supplements and leaf litter in your hermit crab's diet are highly recommended. Please note that Biobedding Hermit Crab is designed to grow fungi - this is not a sign of a dirty tank, but of a healthy, clean bioactive environment. Recommended Clean up Crew: Springtails are helpful for eating mold. Mold is common in warm, humid, low ventilation environments and springtails will keep it from becoming unsightly. Isopods eat droppings and pieces of food hermit crabs will try to bury. Ideal isopods are not picky about their environment and will not bother soft molting crabs. For these reasons, the best candidates are Porcellionides pruinosus (Powder Blue, Powder Orange, White Out, Oreo Crumble) and Dwarf Tropical Whites. We do not recommend any Porcellio laevis.  Not sure if this is the right substrate for your pet? Josh's Frogs also offers Coco Select, Dig It, ABG Mix, Coco Cradle, incubation media, feeder insect beddings, various shredded barks like Aspen, Cypress, Pine, and more! Read more