4" filter media cups include a free high quality filter media bag, as used in Red Sea Reef-Spec Carbon. Cup Dimensions: 4.25 x 4.25 x 8.5"

4" Filter Media Cup Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter media. The round design allows the...

7" Filter Media Cup Our 7" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter media. The round design allows the...

4" Filter Media Cup Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter media. The round design allows the...

New to ESHOPPS Bio Cup R, (Rectangular) media cup is designed to be used in place of a standard 4”x7” filter sock. ESHOPPS Bio Cup R all acrylic construction & high flow water channels allow for any type of filtration media...

4" Filter Media Cup Kit Includes: 2x - 4" Clear filter media cup, 1x - Box of SERA filter media. Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a...

The IceCap 7 in Media Cup can hold just about any type of filtration media, from filter floss, ceramic media, carbon or GFO. Just put the Media Cup in place of your 7" filter sock and fill it with your favorite filter media. High-flow slots are cut at...

4" Filter Media Cup Kit Includes: 1x 4" Clear filter media cup, 1x Box of SERA filter media. Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid...

4" Filter Media Cup Kit Includes: 1x 4" Clear filter media cup, 1x Box of SERA filter media. Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid...

7" Filter Media Cup Our 7" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter media. The round design allows the...

4" Filter Media Cup Kit Includes: 2x - 4" Clear filter media cup, 1x - Box of SERA filter media. Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a...

4" Filter Media Cup w/ Two Red Sea Mesh Media Bags Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter...

4" Filter Media Cup w/ Two Red Sea Mesh Media Bags Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter...

4" Filter Media Cup w/ Two Red Sea Mesh Media Bags Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid one piece design, that holds any filter...

The Pre-filter Foam Set 45 ppi for the BioMaster 250, 350, 600, or 850 and BioMaster Thermo 250, 350, 600, or 850 includes 6 fine replacement filter foams Customize your choice of filter foams to...

4" Filter Media Cup Kit Includes: 1x 4" Clear filter media cup, 1x Box of SERA filter media. Our 4" Filter Media Cup will replace all those filter socks you have hanging around. Made out of a BPA free Polypropylene, this 4" Filter Media Cup is a solid...

The Pre-filter Foam Set 60 ppi for the BioMaster 250, 350, 600, or 850 and BioMaster Thermo 250, 350, 600, or 850 includes 6 ultra fine replacement filter foams Customize your choice of filter...

The Carbon Pre-filter Foam Set for the BioMaster 250, 350, 600, or 850 and BioMaster Thermo 250, 350, 600, or 850 includes 6 carbon replacement filter foams Safely regulates the pH value and water...

The Pre-filter Foam Set 30 ppi for the BioMaster 250, 350, 600, or 850 and BioMaster Thermo 250, 350, 600, or 850 includes 6 coarse replacement filter foams Customize your choice of filter foams...

The 30 ppi Replacement Filter Foam for the BioMaster 250, 350, 600, or 850 and BioMaster Thermo 250, 350, 600, or 850 includes a coarse replacement filter foam Customize your choice of filter...