Alien Syresten is a black syresten made of black corundum material.
It is perfect to use when you want to add more oxygen to your tank or system to your plants.
The stone is relatively small but performs a lot, it uses the air efficiently and creates finer bubbles for increased oxygen without increased pressure.
You can connect the stone to an air pump easily with the socket on the side.
* Easy to use.
* It is of high quality.
* Black corundum oxygen stone.
* High density of the stone.
* Creates finer bubbles.
* Size: 50mm.
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