6pcs Pre-Filter Sponge, Pre Filter Foam Sponge Roll for Aquarium Fish Tank (6 x 3.5cm /2.4x1.4 inch) Customizable Stickers No Drilling and Installation: No

No Drilling and Installation: No need any tools

such as gym

Can be Install a micro TF card Max is 128G (not included)

Battery Capacity: 55mAh (Included)

6pcs Pre-Filter Sponge, Pre Filter Foam Sponge Roll for Aquarium Fish Tank (6 x 3.5cm /2.4x1.4 inch) Customizable Stickers No Drilling and Installation: NoMade of high quality mesh filter sponge, a cylinder with a length of 2. 4 inches and a diameter of 1. 4 inches, with a single hole design. Perfect material: The aquarium filter is made of high quality filter foam, fluorine free, safe; corrosion resistance, low flow resistance, strong filtration, not easy to deform and durable. Sponge hole design: The uniform and parallel micro hole design makes the water flow more smooth, reduces clogging, better