CaribSea Aquatics Coco Soft Fiber Bricks, 8-Quart Compressed Cocohusk - expands up to 8 quarts Helps increase & maintain humidity Aids in burrowing behavior; Absorbs waste and helps control odor Package Sizes: Brick - expands to about 8 quarts Use: Vivariums, Terrariums, reptile and amphibian enclosures to help maintain humidity