High Flow Flexible Filter Media Cup 4 inch - Coral Red (Now Flexible & Slotted for Higher Flow)
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 opaque color will easily hide any blemishes that may occur from changing out filter media.
The round design allows the Cup to slide into place, regardless of which “side “slides in first. The cup fits most round filter sock holders intended for use with 4" diameter filter socks. An optional Filter Media Cup Adapter is available to accommodate C shaped filter sock holders or those with slightly larger diameter holders.
Simply drop the Filter Media Cup into your sock holder or filter tray, and fill with desired filter media. The beauty of the cup is you can use a wide variety of media types including filter pads, filter floss, carbon, GFO and biological filter media. To clean just replace your filter media as needed. You will no longer need to rinse and house used filter socks.To reduce any noise produced by your Filter Media Cup, check out our reef-safe Filter Media Cup Silencer.
- Dimensions: 6" Height and 4" Diameter
- Color: Coral Red
- Made in the USA
- Material: 100% Virgin BPA free Polypropylene (typically used in Tupperware)
Note: GFO, Carbon, and other chemical filter media should be placed inside a media bag to prevent media from exiting the filter cup. Filter Media Cups are designed to fit sumps that use standard 4" filter socks; However, they will not fit Trigger Systems Sumps with an oval-shaped sock holder. As a precaution, we do recommend a thorough rinse with vinegar and water before placing into your filtration system.
If you`ve ever used filter media inside a filter sock you know how water tends to bypass filtration materials like activated carbon and GFO. Maybe you`ve even given up using filter socks, leaving your filter frame unused. Why not switch to the Filter Media Cup instead?
The cup is designed to drop into a filter sock holder. The bottom of the cup has large holes so water flows freely through the media. The media cup works like a mini reactor.
There are several ways to use the media cup. You can fill it with bagged filter media, like activated carbon. It`s possible to use several types of bagged media, like GFO and resins at the same time. Putting a layer of filter floss or sponge on top of the media helps to evenly disperse the water and prevent channeling. Biological media works too.
We really like how easy it is to rinse fresh filter media, like activated carbon or resins. Just place the loaded filter cup under running water. Your hands stay clean and the media is washed and ready to use.
The filter cup is injection-molded in the US using food-grade, BPA-free polypropylene plastic, so no worries about being reef-safe. Give the cup a quick rinse with vinegar to remove any traces of mold release before use. An optional Filter Media Cup Adapter is available to accommodate C shaped filter sock frames or those with slightly larger diameter holders.
This Filter Media Cup opens up new opportunities to enhance your filtration system. You can even switch back and forth between a micron filter sock and specialized filter media for the best of both worlds. The cup and adapter ring fits most sock holders. If your curious if it will fit your sump, contact us and we`ll be happy to check!
February 02, 2021
No, I would not recommend this.
Not 4 inches
Pros: simple but well made device
Cons: not machined to 4" as claimed therefore useless... had to return them.
Advertised as a 4" media cup as stated in the ad and on the box itself. The ones I received are less than 4", not by much but enough to fall through the holes in my AIO tank., I ordered 4" filter socks at the same time and they are the correct diameter and fit perfectly. These cups may fit some systems but not mine... buyer beware. They are about 3 3/4" not 4.
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March 25, 2019
Yes, I would recommend this.
Great filter cup
Flexible filter cup that is simple and gets the job done. It is well made and I'll definitely keep using these filter cups. It fits my trigger ruby sump when used with the adapter ring which Marine Depot also sells. The company who makes these is also very helpful and responsive to questions.
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