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Red Sea Reefer 4 Inch 225 Micron Felt Fine Polish Filter Bag


Item #: RS42196

In Stock

Replacement 4" felt filter sock for Red Sea Reefer Series Aquariums

225 Micron Felt Fine Polish Filter Bag - 4" ring diameter, 10.5" Length

Manufacturer information

With a dedicated team of scientists and other professionals, Red Sea is widely recognized as a leading innovator and manufacturer of quality products for aquarium hobbyists. Red Sea constantly strives to provide hobbyists of all levels with highly effective solution-driven products designed to make your fish-keeping experience as enjoyable and successful as possible.

The embodiment of Red Sea’s dedication to providing solutions for today’s reef-keepers is its range of MAX-NANO, MAX-E & MAX-S aquariums- The only choice for true Plug & Play™ coral reef aquariums, now featuring the very latest in LED lighting technology.

For advanced reef-keepers the Red Sea REEFER provides a great platform into which you can add your own selection of hardware. With its ultra-clear glass, ATO built-in, silent flow valve and superb quality of finish the REEFER sets the standard for those wishing to customize. REEFER is also available as a Deluxe version with LED lighting included.

Red Sea’s unique Reef Care Program (RCP) provides a comprehensive, safe and easy to use program for testing and supplementing within reef aquaria, and is perfectly complemented by Red Sea’s Coral Pro & Red Sea Salt’s, which has become the salt of choice for those seeking the very highest quality water quality for their coral reef aquariums. Both salts are made using a unique natural process which delivers unrivalled homogeneity and is perfect for delicate corals. Check your individual bucket of salt’s composition using Red Sea’s innovative new “MyBatch” software.

Whatever your aquatic needs, Red Sea delivers high quality innovative, solution based products.

5 Stars


Reviewed on
August 09, 2019

Yes, I would recommend this.

Perfect fit

Pros: Perfect fit

Cons: Expensive

These fit perfectly in my Red Sea Reefer 170. The only reason I didn’t give it 5 stars is that they are super expensive, but this is more of a complaint for Red Sea. They don’t use standard sized filter socks.

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Reviewed on
July 04, 2019

Yes, I would recommend this.

This One Doesn’t Sock!

Pros: Help extend filter and tank maintenance.

Cons: Should frequently be changed depending on your tank load.

Good quality sock filter, collects minute dirt particles and tank waste. Actually aids in protein skimmer performance, extends its maintenance and tank cleaning too. Good water polisher!

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Reviewed on
November 06, 2018

Yes, I would recommend this.

Rea Sea 4” Micron bag

Pros: Great packaging, great filter bag

Cons: You pay a little extra for the name, but worth it.

I just stared using these on a custom sump. Perfect size 10.5” long. Filter socks work great 225 micron is the best I’ve used. As stated by other reviewers rinse before using. Overall my favorite filter sock I’ve used.

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Reviewed on
May 11, 2017

Yes, I would recommend this.

Rinse before use

Awesome! Just make sure you rinse them real good first or your skimmer will go nuts!!!

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