Description

It is able to absorb harmful waste to keep the water tank in stable condition. Can be used as filter material for drinking water and feeding water, can store out of trace elements, oxygen, water balance. . This is a set of 450g volcanic rocks for water tank

Features

- is suitable for all marine and fresh water aquariums.

- Breathable water permeability is good, help to cultivate and produce.
- The surface covered with many pores.
- It can be used as filtering media or fish tank decoration.
- It is able to absorb waste to keep the water tank in stable condition.
- Color: As shown.
- Material: Volcanic rocks.
- Size: About 6x6x6cm.

1 x Bag of Volcanic rocks

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