【Features】
1, clean and beautiful, easy to install.
2, cleaning you worry and effort.
3, blocking the fish excrement in the filter, to maintain the post-filtration nitrification system stability, to extend the filter cleaning cycle.

Filter bag size: 4 inch (pocket diameter 10 cm × length 38 cm)

【Scope】
Applicable to the bottom of the filter tank, install the product and filter area, blocking fish excrement