Maintenance of the bio sponge filter pads：
Remove and clean with water when the sponge pads are found to be dirty, or remove and clean once every 1-4 weeks
It is recommended to replace the sponge in 6 to 12 months or after the sponge wears out, because long time use, there will be debris particles blocking the micro-pores of the sponge, affecting the use.

Dimension:
8.5”x8.5”x0.79” (L x W x H) Includes:
3xcoarse (Black)
3x medium (Green)
3xfine (Blue)
After-sales service:
When you buy Aillsa Filter Pads Bio Sponges, you can apply for return or exchange if you are not satisfied with the product. Any questions about g filter pads can be consulted at any time, and we will reply by email within 24