Description:
1.Great for the cultivation of nitrifying bacteria.
2.PH Neutral.
3.Help to purify water , decompose harmful substances, adsorb impurities.
4.Filter water and add the oxygen solubility .
5.Do not often change these filter media. After six month used, change half of them and use new ones with the rest old ones.

Attention:
1.After transportation, the bacteria house may have ceramic dust on surface. Please understand it.
2.The new bacteria house should be washed with fresh water before usage .
3.After using in fish tank , if the bacteria house need to be washed , wash it with aquarium water , do not use tap or boiled water.