Features:
Made of natural volcanic, can stay firmly on the bottom of the aquarium.
It can be used to plant and fix water grass.
It can also be used as the aquarium filtration material.
Very useful and economic.

Volcanic rocks are naturally formed and have many holes on them. It is normal for them to have uneven surfaces. Please note that.

Specification:

Size:  as picture

Material: volcanic

Color: black, red

Thickness:1cm for red,1.5cm for black

Quantity: 1pcs
The shape will be different for different batches. Please kindly note.

Note:
Please allow 1~2cm differs due to manual measurement.   
Due to the different display and different light, the picture maybe a little different with the actual color of the item. Thanks for your understanding.

Including:

1pcs Aquarium volcanic Slices