Mesh bag (MB21) with 2 cubic feet of Bio-Blox

Great affordable choice for large volume application. Contains same Bio-Blox media used in all of our Eco-Series filters!

Features:

• This tough nylon media bag will last for many years and can hold all types of large media
• Includes two cubic feet of Bio-Blox, our lowest cost media!
• Media bag is 1/4? mesh and has drawstring with push button release