This Hermit Crab Kit is designed for use with habitats up to 10 Gallons in size. The Hermit Crab Kit includes: Hermit Crab Care Book, Hermit Crab Thermometer, Hermit Crab Sand, Hermit Crab Soil, Hermit Crab Food, Trial Size Salt Water Conditioner. Trial Size Drinking Water Conditioner, Extra Small Water Dish, Hermit Crab Sea Sponge, Fancy Hermit Crab Shell.