These pre-cut filter sponges are intended to work in combination for Ultum Nature System's Original All-In-One aquarium tanks. Reference the sizes below to purchase the correct sponge for your All-In-One aquarium. Simply remove the existing sponge, and replace it with a new one! We recommend allowing the new sponge to float in the tank for a few days to soak prior to switching sponges out.

Specifications:

30A All-in-One Replacement Sponge

7 * 5.5 * 22.5 cm

45A All-in-One Replacement Sponge

10 * 6 * 20.5 cm

60A All-in-One Replacement Sponge

13.4 *6 * 28.5 cm

*Not compatible with the Dual All-In-One!*