The bottom tray grid is for maintaining cleanliness in aquariums by preventing debris buildup and promoting water flow. Its adaptable structure fits seamlessly into different tank setups, offering a reliable solution for filtration and organization. The grid also doubles as a platform for turtle basking or other aquatic accessories. Features -Color:Transparent -Material:Plastic -Size:25.80X19.50X0.50cm/10.14X7.66X0.20in (Aquarium Grid Plastic) -Size:3.00X1.20X0.70cm/1.18X0.47X0.28in (Pillar) -Impurity removal: the grid panel efficiently traps debris and particles, ensuring a pristine and healthy water environment for your aquatic pets -Prevents dead zones: promotes water circulation to eliminate stagnant areas, creating a balanced and oxygenated habitat for fish and other aquatic creatures -Flexible compatibility: for aquariums, turtle tanks, and breeding systems, offering versatile functionality for various aquatic setups -Seamless interlocking: the design allows for easy connection, adapting to tanks of different sizes and shapes -Assembly: designed for user convenience, the grid can be installed quickly without the need for additional tools or equipment Package list: 4 x Aquarium Grid Plastic 40 x Pillar