
Enjoy fast, free delivery, exclusive deals, and award-winning movies & TV shows with Prime
Try Prime
and start saving today with fast, free delivery
Amazon Prime includes:
Fast, FREE Delivery is available to Prime members. To join, select "Try Amazon Prime and start saving today with Fast, FREE Delivery" below the Add to Cart button.
Amazon Prime members enjoy:- Cardmembers earn 5% Back at Amazon.com with a Prime Credit Card.
- Unlimited Free Two-Day Delivery
- Streaming of thousands of movies and TV shows with limited ads on Prime Video.
- A Kindle book to borrow for free each month - with no due dates
- Listen to over 2 million songs and hundreds of playlists
- Unlimited photo storage with anywhere access
Important: Your credit card will NOT be charged when you start your free trial or if you cancel during the trial period. If you're happy with Amazon Prime, do nothing. At the end of the free trial, your membership will automatically upgrade to a monthly membership.
One-time purchase:
$10.49$10.49
FREE delivery: Saturday, March 23 on orders over $35.00 shipped by Amazon.
Ships from: Amazon.com Sold by: Amazon.com
Subscribe & Save: Unlock 15% savings
Save 15% when you receive 5 or more products in one auto-delivery to one address. Currently, you'll save 5% on your Jun 20 delivery. Choose how often it's delivered
From once every 2 weeks to once every 6 months Skip or cancel any time
We'll send you a reminder before each delivery.
5%
15%
$9.97$9.97
$8.92$8.92
First delivery on Mar 26 FREE delivery Saturday, March 23 on orders shipped by Amazon over $35
Ships from: Amazon.com Sold by: Amazon.com
Unlock 15% savings
Save 15% when you receive 5 or more products in one auto-delivery to one address. Currently, you'll save 5% on your Jun 20 delivery.Choose how often it's delivered
From once every 2 weeks to once every 6 monthsSkip or cancel any time
We'll send you a reminder before each delivery.• No fees
• Cancel anytime
Unlock 15% savings
Save 15% when you receive 5 or more products in one auto-delivery to one address. Currently, you'll save 5% on your Jun 20 delivery.Choose how often it's delivered
From once every 2 weeks to once every 6 monthsSkip or cancel any time
We'll send you a reminder before each delivery.Potential Savings
Potential Yearly Savings is an estimate based on your selected delivery frequency and the base discount. Actual savings may change based on delivery frequency and discount eligibility.Pricing
While you will always receive a Subscribe & Save discount, individual product prices can go up or down over time. If the price of your subscribed product changes, the new price will be displayed in your order review email and will be applied only on future shipments. You can review your subscription price and edit or cancel your subscription at any time
Added to cart
API Co2 Booster Freshwater Aquarium Plant Treatment 8 Fl oz Bottle
Price: | $10.49$10.49
Return this item for freeFree returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges Learn more about free returns. How to return the item?
|
Price: | $9.97$9.97
$8.92$8.92 |
Purchase options and add-ons
Brand | API |
Liquid Volume | 8 Fluid Ounces |
Item Weight | 0.6 Pounds |
Item Form | Liquid |
Target Species | Fish |
About this item
- Contains one (1) API CO2 BOOSTER Freshwater Aquarium Plant Treatment 8 fl Ounce Bottle
- Promotes plant growth in freshwater aquariums
- Adds essential carbon in a form plants can absorb from the water
- Can be used alone or with a CO2 system without altering aquarium pH levels
- Use daily in order to ensure lush, vibrant aquarium plants
Customer ratings by feature
Frequently bought together

Similar items that may deliver to you quickly
- MICROBE-LIFT All In One Aquatic Plant Fertilizer, Increases Plant and Root Growth, Improves Coloring, 16ozAmazon's Choicein Aquarium Water Treatments
From the manufacturer


Without the addition of essential nutrients, aquarium plants will gradually yellow, drop their leaves, and eventually die. Plants take up nutrients by their roots and leaves. API LEAF ZONE plant fertilizer contains an excellent source of the necessary plant nutrients and is rapidly absorbed through plant leaves to promote lush growth and vibrant color. API ROOT TABS plant fertilizer are rich in iron to develop strong roots, rapid growth, and best coloration. Slowly releasing simple carbon compounds, API CO2 BOOSTER product aids in fueling the photosynthetic process by turning light energy into new plant growth.

Vibrant aquatic plants vs. unsightly algae
Healthy growing plants can outcompete algae. In fact, aquatic plants help reduce algae growth, as they compete for the same nutrients. Here are some guidelines to set up the right environment:
- For thriving aquatic plants, use a lighting system type and wattage that suit them best.
- To prevent unsightly algae growth, aquarium light should be on a maximum of 8-10 hours per day.
- It is recommended to test the water with both API NITRATE & API PHOSPHATE TEST KITS because excess nitrate and phosphate can contribute to unsightly algae growth, and zero levels of nitrate and phosphate will hinder plant growth, so you’ll want to make sure levels are optimal.
- To get rid of algae, use API ALGAEFIX algae control at first sight.

API plant products are formulated to be used in aquariums containing freshwater fish.
If overdosed, perform a water exchange to remove excess material.

Making A Better Underwater World
At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. For close to 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world.
Product guides and documents
Looking for specific info?
Product Description
API CO2 BOOSTER Freshwater Aquarium Plant Treatment promotes vibrant, healthy aquarium plants with easy-to-use liquid carbon, which is a necessary element used by aquarium plants for photosynthesis. API CO2 BOOSTER Freshwater Aquarium Plant Treatment supplies a concentrated source of carbon in two forms: CO2, as well as simple, organic carbon compounds. This liquid treatment supplies simple carbon compounds and slowly releases CO2 that plants can absorb through the water. May be used alone or with a CO2 system. API CO2 BOOSTER Freshwater Aquarium Plant Treatment is safe for use with freshwater fish and will not alter pH levels in aquariums. Use with API LEAF ZONE and API ROOT TABS Plant Fertilizer for complete plant care. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.
Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 2 x 2 x 8 inches; 9.6 ounces
- Item model number : 579C
- Date First Available : December 21, 2010
- Manufacturer : Mars Fishcare
- ASIN : B003NXRSRY
- Country of Origin : USA
- Best Sellers Rank: #5,141 in Pet Supplies (See Top 100 in Pet Supplies)
- #37 in Aquarium Water Treatments
- Customer Reviews:
Important information
Directions
Use the API Dosing Cap on Bottle. Add 1 ml for 10 U.S. gallons (38 L) or 5 ml for 50 U.S. gallons (190 L). Dose once a day.
To report an issue with this product or seller, click here.
Compare with similar items
This Item ![]() API Co2 Booster Freshwater Aquarium Plant Treatment 8 Fl oz Bottle | Recommendations | dummy | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $10.49$10.49 | -32% $27.07$27.07 List: $40.00 | $23.00$23.00 | $17.01$17.01 | $93.73$93.73 | $26.99$26.99 |
Delivery | Get it as soon as Saturday, Mar 23 | Get it as soon as Monday, Mar 25 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Tuesday, Mar 26 | Get it as soon as Monday, Mar 25 | Get it as soon as Monday, Mar 25 |
Customer Ratings | ||||||
Easy to use | 4.4 | — | — | 4.9 | — | 4.1 |
Value for money | 3.9 | — | — | 4.8 | — | 4.2 |
Sold By | Amazon.com | Amazon.com | Amazon.com | R T S | Amazon.com | Clscea |
target species | Fish | Fish | Fish | Fish | Fish | Fish |
liquid volume | 8 fluid ounces | 450 milliliters | 225 milliliters | 473 milliliters | 16 fluid ounces | 2 liters |
form | Liquid | Powder | Powder | Liquid | — | — |
weight | 0.6 pounds | 0.7 pounds | — | — | 16.9 ounces | 4 kilograms |
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the ease of use, color, quality and performance of the aquarium pond water treatment. They mention that it's easy to use and requires no additional equipment. Customers also appreciate the vibrant tank and the improvement in color of their plants. However, opinions are mixed on value.
AI-generated from the text of customer reviews
Customers like the performance of the aquarium pond water treatment. They say it works well for their aquatic plants, and is amazing for fighting algae. They use just a few drops a day, and it does not affect the fish.
"This stuff works wonders to keep your aquatic plants healthy and growing and does not affect the fish in any way would recommend for those needing..." Read more
"Works great for plants" Read more
"...of following the dosing directions on the bottle my algae problem was significantly reduced, and my plants began a completely new growth cycle...." Read more
"This stuff has helped my aquarium plants and it hasn’t even been a week yet...." Read more
Customers are satisfied with the quality of the aquarium pond water treatment. They mention that it provides excellent plant growth and helped to boost plant growth partnered with a new light. Some customers also mention that the product is a good, cheap CO2 supplement.
"...my algae problem was significantly reduced, and my plants began a completely new growth cycle...." Read more
"...My plants are greener and growing! I cannot fault this product for my ignorance and some may have great success with this, but I won’t use it again." Read more
"...My fish are fine and the plants are growing. I cannot say how much good it is doing, because some plants are doing better than others...." Read more
"...this CO2 booster my plants wither within 2 weeks, now they grow vibrantly for months" Read more
Customers like the color of the aquarium pond water treatment. They mention that their newly planted aquarium plants look good, have never been more green or lush, and have noticed more growth and improvement in color.
"...months after using at a regular interval things are looking healthy and lush...." Read more
"...After a week noticeably more growth and improvement in color" Read more
"Within a week of using this my plants thrived and looked better than ever!..." Read more
"...My plants have never been more green or lush." Read more
Customers find the aquarium pond water treatment easy to use. They mention that it is simple to set up and does not require any additional equipment.
"...Plus it's easy to use and requires no additional equipment." Read more
"I love how easy it is to use, just follow the directions on the back and you’re done! My plants seem to love it too!" Read more
"...Its easy to use, but a waste of money for me." Read more
Customers are mixed about the value of the product. Some mention it's great value and completely worth it, while others say it' s not worth the money and a waste of money for them.
"...a long way, and so even though it is a bit pricey, it has been completely worth it! I would definitely recommend for any kind of live plant set up." Read more
"Its really a waste of money. It does nothing to the plants. Just pay upfront and get a real CO2 system." Read more
"Great value and product..." Read more
"...Its easy to use, but a waste of money for me." Read more
Reviews with images

-
Top reviews
Top reviews from the United States
There was a problem filtering reviews right now. Please try again later.

Reviewed in the United States on January 30, 2023





Top reviews from other countries


Also if you keep any sort of algae grazers, like Ottos or even shrimp, this could reduce the food available to them.
This is a very potent chemical - so use sparingly and as last resort as algae control.




Reviewed in Australia on March 16, 2024


i did not want to invest a ton on money on co2 system so i decided to go with API. when i brought it, seachem Excel was not available.
This works great as good as seachem Flourish Excel, within a week algae started to die down and the plant started getting lush. algae did a number of some of my plants but after using this for 1 month and i am happy with the results. the plants are lush and the algae issue is gone.
i just wish they would make a larger bottle for cheap, the chemical used is not expensive but they market it as some secret formula and sell it expensive. the base indigent is derivative of glutaraldehyde and you can find many hospitals use it to sterilize medical equipment.