采用5v低压水泵，品质有保障。

过滤棉提供广大表面积，兼顾过滤杂质和培养硝化细菌的作用。

滤材盒可配多种滤材，培养高密度硝化细菌，大大提升过滤效果。

Safe and durable,5V low voltage water pump, guaranteed quality and safety

Biochemical filtration sponge provides a wide space for both the filtration of impurities 

and the cultivation of nitrifying bacteria.

The filter box can be filled with kinds of filter materials,Culture high-density nitrifying 

bacteria,Greatly improve the filtering effect.

DD-200A