Eshopps 300 Micron Filter Sock - 4 in. x 13.75 in.

SKU: 237605
Manufacturer: Eshopps
MPN: 19040

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Eshopps replacement 4 in. Micron Filter bags are designed specifically for Eshopps Reef sumps, but standard 4 in. retaining ring can be used in other filter models also. 200 Micron pore size performs fine mechanical filtration, for crystal clear aquarium water.


MaterialFelt Bag
Length13.75 in.
Width4 in.
Internal Id

Ratings & Reviews

4 reviews

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Helps limit micro bubbles


I got these to help catch detritus as well as minimize the micro bubbles entering through the rest of my refugium and ultimately back to my main tank. They do a really good job! I have 1800GPH going through one bag. I have to pull the bag up over the PVC output otherwise water runs over the top, but otherwise this is great. I have 2 that I alternate/wash about weekly.

Helps clean


I order several of these for my sump/refugium and love them. They catch a lot of detritus and very easy cleaned. I toss my in the washing machine (no soap) and run it on a quick cycle and they come back out white and ready to go.

Filter sock


Good sock if you have the depth for them. Their good for at least a week befor needing to be swapped out.

Eshopps filter sock


Good sock at a great value,.