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API CO2 Booster, 16-Ounce has been added to your Cart

API CO2 Booster

by API
4.5 out of 5 stars 97 customer reviews
| 13 answered questions

List Price: $13.99
Price: $7.99 & FREE Shipping on orders over $35. Details
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16 oz
  • Contains a unique organic carbon compound
  • Provides plants with essential carbon
  • Easy-to-use liquid form
  • Helps start and maintain healthy aquariums
  • 16 oz. bottle
2 new from $7.99
$7.99 & FREE Shipping on orders over $35. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • API CO2 Booster, 16-Ounce
  • +
  • API Leaf Zone Aquarium Plant Food, 16-Ounce
  • +
  • API Root Tabs 10 Count
Total price: $24.63
Buy the selected items together


Product Description

Size: 16 oz

Carbon deficiency is one of the leading causes of poor plant growth in aquariums. The new API CO2 BOOSTER contains a unique organic carbon compound that provides plants with essential carbon in an easy-to-use liquid form. API has proven the efficacy of this new product, with dramatic results. In laboratory testing, plants treated with API CO2 BOOSTER grew 7 times more than plants in an untreated aquarium. API CO2 BOOSTER joins the Plant Care step of the API Successful Fishkeeping Program, a unique, easy-to-follow program to assist fishkeepers in starting and maintaining healthy aquariums.

Product Details

Size: 16 oz
  • Product Dimensions: 2 x 2 x 8 inches ; 1 pounds
  • Shipping Weight: 1.2 pounds (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B004GY9ZYI
  • Item model number: 579E
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (97 customer reviews)
  • Amazon Best Sellers Rank: #3,577 in Pet Supplies (See Top 100 in Pet Supplies)

From the Manufacturer

API Makes It Simpler

Follow the API easy care guide steps to simplify aquarium care.

Use the API dosing cap on the bottle. Add 1 ml per 10 U.S. gallons of aquarium water or 5 ml for 50 U.S. gallons. Dose once a day.

Easy Care Guide

The Science Inside

Treatment Sizes

Customer Reviews

Top Customer Reviews

By fishy42 on January 25, 2013
Size: 16 oz Verified Purchase
This does work...not as well as pressure or DIY systems but it makes a difference and is cheap and easy to use. Nice side effect is it helps get rid of some algaes like hair and black beard. Just remember not to overdose as it can kill your fish and it can be hard on some plants. I had a some cryps that seemed to grow fast but then the leaves would quickly decay. Ludiwigs, boca, ratolla all did well...may vals also did fine.
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Size: 16 oz Verified Purchase
I would recommend this product to anyone wanting to give their planted aquarium a little boost, but can't afford/don't want a CO2 system. A few days after use, I noticed my amazon swords perking up and that my java fern was even brighter green and more lush.
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Size: 16 oz Verified Purchase
The CO2 Booster from API created a noticeable difference with the bamboo plants and ferns in my 20 gallon aquarium. They are now greener and healthier looking. You must use the product daily, but it will last you about 3 months. I also use Hagen Nutrafin Plant Gro weekly with this product to keep my plants looking their best.
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Size: 16 oz Verified Purchase
I have a planted tank with a fluorite substrate, and a ton of plants and fish. I was worried about harmful side effects of adding this to my tank with the fish. However, I have not seen any negative impact to the fish.. in fact the fish seem happier as the plants seem to be developing more. Happy plants = happy fish!
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Size: 16 oz Verified Purchase
My amazon sword plant in my aquarium looks much healthier after adding this to the water. I'm very pleased with this product.
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Size: 16 oz Verified Purchase
Made my plants in all my tanks grow immensely, within a week!! Yes, within a week, there was definite, discernible growth. By the end of the month, I was clipping plants because they were crowding the tanks. I am a bit of a aquarium-plant newbie, and there may be other products or procedures that work better, but I am sold on this product.
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Size: 8 oz Verified Purchase
Small planted tank with only one fish was doing well before I had to move it. There must have been some nutrient loss or the plants got stressed when I put the tank back together because the plants started immediately to wilt and loose color. Within a week after adding this to the tank and the top off water the plants are back to the bright green the were before.
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Size: 16 oz Verified Purchase
This is a great way to get plants to root. If your adding or trimming and moving the trimmings else where. this will boost the compounds the plant needs to root nicely. I used it when i set up new tanks with plants. Within a few days you see results. a few weeks you see flourishing plants that want to spread. I would Recommend this for day use if you do not have a good means of CO2, but if you do have CO2 i would recommend only for New plants, Either adults or starters/stems to allow them to root nicely.
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API CO2 Booster, 16-Ounce
This item: API CO2 Booster, 16-Ounce
Price: $7.99
Ships from and sold by Amazon.com
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