Nylon Media Bags Select Product:21" x 30" (1/4" Mesh) w/ 1/2 Roll Filter Floss One dose every 24 hours

One dose every 24 hours until desired results are achieved

Replacement Sleeve (#2 in the image below) for UltraKlean™ Biological Pressure Filter

Be prepared to siphon out dead filamentous algae

Rough textured surface readily accepts paint

1 container contains up to 32 scoops

Nylon Media Bags Select Product:21" x 30" (1/4" Mesh) w/ 1/2 Roll Filter Floss One dose every 24 hoursPLEASE NOTE: Some pictures show media included. Please see description to know exactly what is included. Used in EasyPro Eco Series and Pro Series filters, these tough nylon media bags will last for many years and can hold all types of large media MB21 and MB22 are 1 4" mesh and have drawstring with push button release (No media included) MB18F is 3 16" fine mesh and has drawstring with push button release (No media included) Use two MB21 inAS, three