Search  for anything...
API

API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box

  • Based on 6,447 reviews
Condition: New
Checking for the best price...
$9.94 Why this price?
Save $4.04 was $13.98

Buy Now, Pay Later

As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Aug 22
Order within 14 hours and 8 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Size: 10 Ct (Pack of 1)


Features

  • Contains one (1) API ROOT TABS Freshwater Aquarium Plant Fertilizer 0. 4-Ounce 10-Count Box
  • Promotes strong root development for lush plants in freshwater aquariums
  • Contains essential nutrients including iron, potassium and carbon
  • Helps new aquatic plants get off to a vigorous start and to keep established plants flourishing
  • Add tablets to gravel bed every month to ensure best results

Description

API ROOT TABS Freshwater Aquarium Plant Fertilizer promote strong roots. Without proper fertilization, aquarium plants gradually yellow, drop their leaves and die. Aquarium plants require essential nutrients for vibrant growth. API ROOT TABS for freshwater aquarium are formulated to supply key nutrients, including iron and potassium and carbon, to help new aquatic plants get off to a vigorous start and to keep established plants flourishing. These nutrients are consumed over time in the aquarium and must be replenished for plants to thrive. Add tablets monthly to ensure best results. API ROOT TABS are safe for use with tropical fish. 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.

Brand: API


Item Weight: 13 g


Item Form: Tablets


Specific Uses For Product: Aquarium,Plant Growth,Root Development


Global Trade Identification Number: 71


Brand Name: API


Model Number: 577C


Global Trade Identification Number: 71


Number of Packs: 1


Manufacturer: Mars Fishcare


Number of Items: 72


UPC: 317163035771


Unit Count: 10 Count


Item Type Name: Aquarium Plant Fertilizer


Part Number: 577C


Item Form: Tablets


Specific Uses For Product: Aquarium,Plant Growth,Root Development


Coverage: Full


Target Species: Aquarium Plants


Item Weight: 13 g


Mixing Ratio: 130


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Aug 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Wow! Noticeable difference within a week!
Size: 10 Ct (Pack of 1)
Review Image by NK
Review Image by NK
Review Image by NK
I bought these for a red tiger lotus in my betta's tank. I'm using stratum as substrate which isn't providing nutrients to the plant. You can see in the first pic that the leaves were tiny and really pale...almost translucent. I put a root tab under it and after a week I had big red leaves coming through. The second pic is about two weeks later and I'm just blown away by the color and size of the leaves now. It's amazing seeing the growth with the root tab added. I've got a 10 gallon tank and only two root feeders so I'm only using two tablets. If you've got a heavily planted tank it says to use 1 tablet for every 30 sq. Inches...so it would take 6 tablets to cover all the substrate in a ten gallon. Idk how often these will need replaced but for my purposes of only a couple plants needing them, it's a great buy and really happy with the results I'm seeing. Third pic is another week later and this thing is really showing itself now. Only thing I did to make it go from small and translucent to big and red is add a single root tab under it. Very happy with results! ... show more
Reviewed in the United States on May 6, 2023 by NK
    • Good product
Size: 10 Ct (Pack of 1)
Works pretty well. I have no complaints, easy to place in substrate 👍
Reviewed in the United States on July 27, 2026 by A.C.S
    • Aquarium plant fertilizer
Size: 10 Ct (Pack of 1)
Seem to work as described, stay under the substrate and benefit the plants.
Reviewed in the United States on July 18, 2026 by JAF
    • Work well. But use with caution
Size: 10 Ct (Pack of 1)
Super potent. Don’t follow directions. One or two per 10 gallon tank. I almost tanked my water nitrates with over putting it in since I have all live plants. They do work. Plants look great. Even my semi aquatic plants grew more root buds. But I have had to do more water changes to get everything stable. They melt fast before getting into substrate. So it made my water very milky which in that respect released a crap ton of nitrates into the water. Size is about the size of a Tums. ... show more
Reviewed in the United States on May 8, 2026 by Brittany
    • Great for planted tanks
Size: 10 Ct (Pack of 1)
Used these for my planted tank and they have Ben great. Good color and growth. I put them in every couple of months. Good value and quality. Provide the nutrients your plants need.
Reviewed in the United States on May 14, 2026 by Edwin cordero
    • Starts dissolving as soon as it hits the water
Size: 10 Ct (Pack of 1)
Compared to other brands this started dissolving as soon as I got it into the water before I could even bury it under the sand. I probably won't buy this brand again
Reviewed in the United States on May 11, 2026 by I'm just a girl in the world
    • Great for root growth
Size: 10 Ct (Pack of 1)
I honestly didn’t think that this product would work, but I’ve definitely noticed a huge difference in my plants in my aquarium. I recently pulled them out to change the locations and the root growth has been crazy. I only use one a month so they will last you a while.
Reviewed in the United States on May 7, 2026 by Shelby Rice
    • Works!
Size: 10 Ct (Pack of 1)
Easy to use and work great!
Reviewed in the United States on July 21, 2026 by kirsten kimble

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...