8pcs Fish Tank Bottom Filter Board Sand Mat

1. Build a powerful filtration system at the bottom of the fish tank
2. Separate the filter material in the fish tank to enhance the speed and efficiency of oxygen dissolution
3. Lay in the bottom of the fish tank, convenient for excrement and other debris deposition and cleaning
4. Using food grade plastic, tough and not easy to break
5. 36 support pillars at the bottom, stable and durable
6. Combined splicing design, can be freely combined, easy to install
7. Material: food-grade plastic
8. Size: about 14.5 x 14.5 x 2.5cm, mesh mouth about 3 x 3mm