SKU: 59887178572

Caribsea ARM Reactor Media 3.8L

Sale price$430.65 Regular price$478.50
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Description

Caribsea ARM Reactor Media 3.8LCaribsea ARM Reactor Media Caribsea ARM Reactor Media 3. 8L is used as a complete solution for calcium reactors, providing calcium, carbonate, and essential trace elements with high solubility and low phosphate content. CaribSea ARM Extra Coarse Reactor Media contains calcium, carbonate, and trace elements. Nearly 50x the Strontium of other brands (7390ppm) Precision grading allows for maximum carbon dioxide penetration No gastropod shells mean the

Caribsea ARM Reactor Media

Caribsea ARM Reactor Media 3.8L is used as a complete solution for calcium reactors, providing calcium, carbonate, and essential trace elements with high solubility and low phosphate content.

CaribSea ARM Extra Coarse Reactor Media contains calcium, carbonate, and trace elements.

  • Nearly 50x the Strontium of other brands (7390ppm)
  • Precision grading allows for maximum carbon dioxide penetration
  • No gastropod shells mean the lowest phosphate content (less than 1/10th of 1ppm)
  • The highest solubility of any reactor media (metastable at 8.2

One of the most trusted media for calcium reactors in the industry. The media is a complete solution that includes both calcium and carbonate as well as essential trace elements.

The media comes in three forms Small, Coarse, and Extra Coarse.

  • Small – Provides the most surface area which maximizes the amount of calcium and carbonate that can be added to the tank. *The small size can clog many reactors and may require ongoing maintenance.
  • Coarse – larger size granules which are less likely to clog equipment.
  • Extra Coarse – Largest size granules and the least likely to clog equipment which results in the lowest maintenance option.

Note: All ARM media is packaged by volume in a 1-gallon container. Weights may vary from container to container.

Size: 3.8L

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 59887178572

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Jea9
Chelsea, US
★★★★★ 3
Indestructible?
Color: Bacon, Color: Bacon
This is after 1 week of arrgressive chewing. Not sure if it's safe for my dog.
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Reviewed in the United States on April 27, 2026
M
Verified Purchase
Marybeth
Draper, US
★★★★★ 4
Beloved But Beware Microplastic Chip-Offs
Color: Bacon
My doodle adores this thing and gnaws on it constantly. He has not been able to harm it, which is great. That’s the best part. Things to be aware of: 1. This is mostly molded plastic; it is a bit heavy and very hard. My dog tosses it into the air and if it lands on him, it HURTS. A lot. 2. While it’s sturdy, sharp teeth eventually gnaw pieces and little shavings off the toy. These are microplastics and could be harmful if your dog swallows them.
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Reviewed in the United States on January 13, 2026
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Cynthia
Waukegan, US
★★★★★ 5
Perfect All-in-One Pet Enrichment Set!
Color: All-Around Dog Puzzle Toys
This puzzle dog toy set is amazing! It’s the most thoughtful and efficient enrichment set I’ve ever used for my crew. The lick mats are high-quality, durable, and the included cleaning brush makes cleanup effortless by reaching every groove. The spatula is perfectly designed to spread treats like peanut butter or yogurt evenly, saving time and preventing messes. These small details really set this set apart from others. Beyond the lick mats, the set includes a puzzle feeder and three puzzle balls that keep my furry babies mentally stimulated and entertained. Each toy is durable, easy to use, and provides a great challenge for everyone. The variety in this set ensures there’s always something to engage my critters and meet their varying challenge level needs. It’s clear this set was designed with both dogs and owners in mind, addressing common pain points like cleaning and mess-free prep. It’s perfect for smart dogs (and other critters!) and delivers great value for the price. If you’re looking for interactive, mentally stimulating toys for your pet, this all-around set is a must-have. My crew love it, and so do I. Five stars!
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Reviewed in the United States on January 26, 2025
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Michelle Day
Draper, US
★★★★★ 5
Great set!
Color: All-Around Dog Puzzle Toys
This is a great set to entertain and beat your dog or puppies boredom! The material is natural so safe there! It’s also very durable ! The mats have suctions on bottom which is very smart ! The treat balls make a good toy even without treats in my experience. You also get a couple free gifts which was a nice surprise.
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Reviewed in the United States on April 28, 2026
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Starbeam
Grantham, US
★★★★★ 5
Great set of dog toys. Lots of variety!
Color: All-Around Dog Puzzle Toys
Great variety of different dog toys. Keeps my dog entertained for a while! She loves the round one with sliding doors. The rubber balls are well made and provide a longer time of play.
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Reviewed in the United States on May 31, 2026

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