中空设计，为好氧和厌氧菌提供优良着床载体，

加速硝化和反硝化细菌的繁殖。

淡海水通用，对水体PH,TDS指标影响小。

优选矿物原料，不易粉化，寿命长。

清洁方便，可冲洗并反复使用。

Hollow design,

providing excellent implantation carrier for aerobic and anaerobic bacteria,

accelerating the proliferation of nitrifying  and denitrifying bacteria.

Common to fresh sea water,

has little effect on water PH and TDS indicators.

Preferred mineral raw materials,

hard to powder, and long operating life.

Easy to clean, can be washed and  used repeatedly.