When you receive this mix, it will be dry. Before adding it to a container to keep your isopods in, it is necessarily to evenly moisten it. This is typically easiest to do in a 5 gallon bucket or a large bowl. Slowly add water and mix until it is evenly moistened. Do not make it so wet that it is dripping excess water when you grab a handful as the isopods can and will drown. Once it is evenly moistened, simply add it to a container you plan to keep your isopods in, add your isopods and you are ready to go. Glass Box Tropicals also recommends adding cork, clean virgin cardboard, and/or leaf litter to the top of your culture.
This is for a 1 gallon bag of isopod substrate. If you would prefer a complete care kit, it will include this substrate, along with all of the other necessities for success with isopods!