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Aquarium Supplies
Home » Saltwater Aquarium Supplies  » Reverse Osmosis  » Replacement Filters  » Carbon Block Filters  »  5 Micron Carbon Block Replacement Filter for Captive Purity and SpectraPure
5 Micron Carbon Block Replacement Filter for Captive Purity and SpectraPure

5 Micron Carbon Block Replacement Filter for Captive Purity and SpectraPure

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MSRP: $17.99
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5 Micron Carbon Block Replacement Filter for Captive Purity and SpectraPure Information

5 micron carbon block prefilter
  • nominal 5-micron rating
  • high dirt-holding capacity maximizes utilization of the carbon block
  • high porosity design helps prevent the cartridge from plugging before its adsorption capacity is exhausted, maximizing the utilization of the carbon while maintaining low pressure drop.
  • manufactured entirely from FDA-compliant materials
Please note that these replacement cartridges are interchangeable with Captive Purity`s, Kent Marine`s, and SpectraPure`s RO or RO/DI units. We have researched the best replacement cartridges among these three manufacturers and offer only the best of each below.

**Variations of this product can be found in many online stores. The version we carry is of the highest quality. Although this item is eligible for price matching under our Low Price Guarantee, please be certain the product you want to price match is the same make and model.

Manufacturer Info

Captive Purity manufactures water filtration and water testing supplies for marine and reef aquaria. The brand is best known for their high-quality line of reverse osmosis filter systems and accessories. Captive Purity also produces refractometers for testing salinity, portable pen-sized meters for testing pH as well as replacement filter media for their RO and RO/DI filter systems.
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5 Micron Carbon Block Replacement Filter for Captive Purity and SpectraPure Reviews

Average Rating
(5 reviews)
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Carbon Block Filtraton

Reviewers Rating Excellent!

Posted: 10/30/2012 from Riverside, CA
4.5 5
Experience Level: Expert

Comments: I have heavy metal issues from new home copper piping and use the carbon Block (two in series) to remove chlorine as well as heavy metals from my tap water inlet to my sump. The Carbon Block filters last about 3 months and removes all the chlorine and most heavy metals while leaving most of the hardness. I run a drip system style water changer to about 200 tanks. I further remove more copper in the sump but the carbon blocks are the first chemical removal media and works great!

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Generic Carbon

Reviewers Rating Average

Posted: 1/19/2009 from WETUMPKA, AL UNITED STATES
3.0 5
Experience Level: Expert

Comments: This 5.0-micron carbon block appears to be a generic product with minimal information on tha packaging. I bought this for a drinking water pre-filter, but think that I'd rather pay the extra $3 and get the RO1131 0.5-micron filtering carbon block (which is what I'll do in the future) which has clear labeling as a high quality carbon block product. However if this is used as a filter element in an aquariun where turbidity is a problem, this 5.0-micron carbon filter would not clog as quickly with particulate matter as should last much longer - which would be a big advantage in that application. However I don't like the lack of information on the lableing on this product which is why I wouldn't recommend it.

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Great item

Reviewers Rating Excellent!

Posted: 9/20/2008
5.0 5
Experience Level: Beginner

Comments: Not only the product is great but the service is beyond my expectations. Thanks!

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Micron Carbon Block

Reviewers Rating Great

Posted: 2/15/2008 from BROOMALL, PA UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: Have no complaints with this product; having clean water is crucial in our hobby.

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did what i hoped...

Reviewers Rating Excellent!

Posted: 8/6/2007 from EL PASO, TX UNITED STATES
5.0 5
Experience Level: Expert

Comments: I use it on a DIY auto top off unit I made for an outdoor pond, as long as I change the filters on a timely basis no chlorine or chloramines register from the unit I have set up and plus it does not clog as quickly as some of the other filters, which is exactly what i hoped for...

3 of 3 People found this review helpful, did you? Yes No

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June 23, 2014
"Great company! Items where extreme top quality, not a problem with any of them. Definitely a lifetime buyer of this site."

June 17, 2014
"I place my order and 5 hours later I received a notification that it had shipped."

June 16, 2014
"They have the best on-time delivery and prompt service of all the other similar websites I have used. Recommend them highly."