API CO2 Booster Freshwater Aquarium Plant Care Treatment, slide 1 of 1

API CO2 Booster Freshwater Aquarium Plant Care Treatment

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Grow beautiful, healthy aquatic plants with API CO2 Booster care treatment. All plants need carbon to grow—the same way humans and animals need food to thrive, plants need a little something to keep going, too! Carbon deficiency is a leading cause of poor aquatic growth, but this treatment may help your underwater plants thrive. It supplies simple carbon compounds and slowly releases CO2, which your plants can absorb through the water. Best of all, it won't alter pH, and is safe to use in freshwater environments.

Key Benefits
  • This liquid treatment supplies simple carbon compounds and slowly releases CO₂ that plants can absorb through the water
  • Promotes a vibrant, healthy planted aquarium for any-level aquarist.
  • Safe for use with freshwater fish and will not alter the pH of your tank.
  • Use daily alone or with CO2 systems—different tanks have different needs.
  • Carbon is an essential element used by aquarium plants for photosynthesis, and absolutely necessary for plant growth, development and survival.

HAZARDS TO HUMANS: Contains glutaral. Irritating to eyes, respiratory system and skin. Harmful if swallowed. Harmful in contact with skin. FIRST AID: IF SWALLOWED: Call a poison center, doctor, physician, first aider or if you feel unwell. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing. Call a poison center, doctor, physician, first aider. IF ON SKIN OR CLOTHING: Wash with plenty of soap and water.

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  • Item Number
  • Aquarium Type
  • Fish Type
    Tropical Freshwater, Betta, Goldfish, Bottom Feeder, Cichlid

Use the API® Dosing Cap on the Bottle. Add 1ml per 10 U.S. gallons of aquarium water or 5ml for 50 gallons. Dose once a day.


Is the effectiveness of API CO2 BOOSTER diminished by aeration and/or water circulation like CO2 gas?

No, API CO2 BOOSTER is an organic compound, not a gas.

Will API CO2 BOOSTER help control black beard/brush algae?

Yes, the active ingredient in API CO2 BOOSTER will help to control black beard algae.

Why can API CO2 BOOSTER be dosed daily, but API LEAF ZONE is only dosed weekly?

API CO2 Booster breaks down chemically to supply carbon to plants within 24 hours, thus the reason for re-dosing every 24 hours. The organic compound slowly breaks down over the 24 hour period, allowing the plants to absorb what they need. Meanwhile, API LEAF ZONE is stable in the water until the nutrients are utilized by the plants, allowing for a weekly dose.

Can API CO2 BOOSTER be used with shrimp?

Yes, API CO2 BOOSTER is safe for use with shrimp. Dosing directions should be followed.

Does the effectiveness of API CO2 BOOSTER change with the different levels of KH or any other water parameters?

No, it does not. There is not enough chemical change in the water to effect water parameters.

Will API CO2 BOOSTER change or affect any other water parameters, such as pH?

No, it will not. There is not enough chemical change in the water to affect water parameters. It would take a big alkaline or acidic change to alter the pH.

Will the required amount of API CO2 BOOSTER vary based upon the number of plants in an aquarium?

No – simply dose according to the instructions, and you’ll get great results.

Fish Care Made Easier

API is a name you can trust when it comes to taking care of fish. Not only are they passionate about fishkeeping, but they're dedicated to improving the hobby and making it easier to maintain the ideal aquatic environment. From helping the novice set up a new tank to providing state-of-the-art filters for advanced systems, you can rely on API's dedication to quality.

Fish Care Made Easier
Maintain the Perfect Setup

Maintain the Perfect Setup

Fishkeeping is a much easier task with API, because they've taken all the guesswork out of setting up a tank and maintaining it. Their proven treatments include water conditioners and clarifiers, fish medications, pH adjusters, algaecides and quick-start solutions—all designed to keep your aquarium crystal clear and your fish happy and healthy.

Testing Is Key

Once you've started a new aquarium, the only way to keep it in perfect balance is with routine water testing. API gives you all the tools you need to create a nurturing environment for both fish and live plants. Their comprehensive Master Test Kits are tailored to freshwater, saltwater or reef environments, and individual tests for things like pH, ammonia or nitrites leave nothing up to chance.

Testing Is Key
Clearing the Water

Clearing the Water

API offers reliable three-step filtration for tanks of all sizes with their FILSTAR XP Canister filters and wide variety of filter media. These powerful filters constantly circulate the water, trapping organic waste and odors, removing harmful ammonia and contaminants, and helping good bacteria to thrive in the tank.

Superior Nutrition

Feeding your aquarium inhabitants, whether they're tropical fish, turtles or newts, is something that can be tricky without the right food. API developed a special diet for every type of fish—one that's highly palatable, which leads to less waste in the tank. And that means less ammonia to cloud the water. For your turtle friends, premium floating pellets and stick treats provide multiple vitamins for a stronger, healthier shell.

Superior Nutrition
About API

About API

Through extensive and continuous research and development, API created quality products for all levels of fishkeeping. As people who are passionate about fish care, they understand the rewards of keeping up a successful aquarium or aquarium. With easy-to-read guides and premium treatments, foods, filters and testing equipment, API helps aquarists establish and maintain an environment where fish can flourish.

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