Designed to safely protect and secure baby anemones, mushroom corals, and leather corals while they naturally attach and grow. This mushroom coral basket creates a controlled environment that allows corals to securely attach to a frag plug, disk, tile, or rubble without being blown away by tank flow. The ventilated design helps prevent loose mushrooms from detaching and drifting into overflows, powerheads, or filtration systems, making it ideal for high-flow reef aquariums and grow-out setups. Once attached, corals can be easily transferred to their permanent location. Each shroom box is 3D printed from reef-safe PETG plastic, providing durability and long-term use in saltwater aquariums. The basket features a matching snap-fit locking lid—simply align the grooves and press into place to keep your coral secure while still allowing proper water flow. Size & Compatibility: Fits up to a 2-inch frag disk, tile, or plug Available in round or square designs to accommodate both disks and frag tiles Optional magnetic versions available (tested to hold securely on glass up to ½ inch thick) For reef keepers who need additional holding strength or a custom setup, stronger magnets or custom sizes and shapes can be made upon request. Important Notes: Frag disks, tiles, and plugs are NOT included (sold separately) Matching plugs and disks are available in our other listings Multiple colors and styles available A reliable, reusable solution for reef hobbyists looking to protect delicate corals during attachment and early growth.