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Home » Saltwater Aquarium Supplies  » Filters  » Inline & Specialty Filters  » Phosphate Reactors  »  Two Little Fishies CDX Carbon Dioxide Adsorption Media System - 750 ml
Two Little Fishies CDX Carbon Dioxide Adsorption Media System - 750 ml

Two Little Fishies CDX Carbon Dioxide Adsorption Media System - 750 ml

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Two Little Fishies CDX Carbon Dioxide Adsorption Media System - 750 ml Information

Many aquariums suffer from low-pH issues. Sometimes it`s the carbon dioxide that accumulates in the air in closed buildings that won`t let the pH of your aquarium stay up. TwoLittleFishies have the solution: It`s called CDX, a Carbon Dioxide adsorption system.

Simply install CDX media in a PhosBan reactor and connect it to the air intake of your protein skimmer with the CDX Adaptor. The CO2-free air injected into your protein skimmer drives off the excess CO2 dissolved in the water, so the aquarium`s pH rises. Happy days are here again! A 750 ml jar will last about 6-8 weeks on the average 50 - 100 gallon reef aquarium. You can tell when it is exhausted because it changes from white to pink.

Manufacturer Info

Two Little Fishies
Two Little Fishies, Inc. was founded in 1991 to promote the reef aquarium hobby with its introductory video and books about reef aquariums. The company now publishes and distributes the most popular reef aquarium reference books and identification guides in English, German French and Italian, under the d.b.a. Ricordea Publishing.

Two Little Fishies CDX Carbon Dioxide Adsorption Media System - 750 ml Reviews

Average Rating
(4 reviews)
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quick results

Reviewers Rating Excellent!

Posted: 9/13/2014 from Washington, DC UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: Very quick and STABLE results. I did not realize how much a closed environment affected my tanks PH until I gave CDX a try. Amazing and simple to use.

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Boosts pH

Reviewers Rating Excellent!

Posted: 8/25/2013 from DC, UNITED STATES
4.5 5
Experience Level: Intermediate

Comments: My pH ranged from 7.9 at night to 8.1 in the day. I have a tank in the basement and during the summer and winter the CO2 levels from the AC and heating unit were elevated. I was having issues keeping acropora corals. People kept telling me that my pH was OK and it wasn't that low. I used this in a canister and after a day or two(give it some time it doesn't work instantly) my pH is now around 8.3. All of a sudden my corals all look a LOT better. I doubt it is just a coincidence. Don't let people tell you pH isn't a big deal in a reef tank. I wish I had tried this sooner.

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CDX Carbon Dioxide Adsorption

Reviewers Rating Excellent!

Posted: 3/10/2013 from MOUNT SINAI, NY UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: This stuff works great..

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Easy to use

Reviewers Rating Great

Posted: 3/6/2013 from HOUGHTON, MI UNITED STATES
4.0 5
Experience Level: Intermediate

Comments: Product is easy to use. I made a simple DIY canister with an empty jar and some microfilter pads, but a media reactor would work great too. My tank is in a basement where a lot of excess CO2 can gather, especially in the winter with the house closed up. The pH on my tank generally ranged from 8.0 - 8.1. Now it ranges from 8.2 - 8.3.

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