This Ceramic Coral Frag Rack Base is designed to support LPS (Large Polyp Stony) and SPS (Small Polyp Stony) corals. Made from high-quality non-toxic ceramic, it ensures no harm to your reef tank's ecosystem and supports coral health. The T-shape design allows the base to easily fit into acrylic coral frag boards or plastic grids, making it perfect for coral separation and cultivation. The two available sizes (30mm diameter x 20mm height and 20mm diameter x 20mm height) offer flexibility, allowing you to choose the perfect fit for your corals and aquarium space. Whether placed in the gaps between rocks or used for SPS coral separation or LPS coral frag cutting, the base provides stable support for corals, helping them thrive. Although the ceramic material itself is not permeable, its strong and stable structure makes it an ideal tool for coral separation, cultivation, and fixation. The base also helps maintain a stable water environment, promoting coral health.