?Fired by high temperature so as to encourage the growth of nitrifying bacteria.
Anit corrosion and provide water of the premium quality for your fish tank.
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Extremely porous ceramic media for efficient biological filtration.
They are used as the biological ?media in salt water and fresh water Aquarium as well as ponds.
Clarify your water naturally and cultivate beneficial bacteria with these porous ceramic media.
Do not clean the bio tube once they are cycled， or you will risk killing off all the benificial bateria you need to filter your water.
Simply rinse and use.
Dense hold structure for nitro-bacteria.
Perfect for freshwater and saltwater fish tank， mini-reef aquarium or ponds.
Easy manitenance.
Filtering effect will be improved greatly.
Size:Small Square:9.6*3cm ? ? ?
? Big Circular:16.5*3.5cm
Package Include:5 pcs
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