Search  for anything...
API

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

  • Based on 6,526 reviews
Condition: New
Checking for the best price...
$11.89 Why this price?
Save $2.10 was $13.99

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

This item is eligible for return within 30 days of receipt

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 Kens Fish
Arrives Oct 15 – Oct 22
Order within 6 hours and 13 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: Oct 15 – Oct 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 so far
Size: 10 Ct (Pack of 1)
my plants seem to like these root tabs and they are very easy to slip into the gravel. I also like that they are easy to break in case you want to spread it out. These seem to dissolve or at least start dissolving as soon as they hit the water. I would say this is pretty good value for money.
Reviewed in the United States on April 19, 2026 by Gavin Smith
    • Good for leaves
Size: 10 Ct (Pack of 1)
Review Image by Dylan
I cannot recommend these enough I put an entire pack in my 20 gallon next to all my dwarf hairgrass and within 2 days they all sent out runners that are already poking through the gravel, supports healthy, non yellowing plant growth, they do make the water a bit cloudy so put them in fast!
Reviewed in the United States on September 6, 2025 by Dylan
    • 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
    • Good for plants
Size: 10 Ct (Pack of 1)
Helped my plants grow in our tank! Seemed to work - would recommend
Reviewed in the United States on September 19, 2026 by Steve Fink
    • Blue brta is alost ready to move in!
Size: 10 Ct (Pack of 1)
the come in foil pack foe ease of opening, they work pretty fast plants taken root already! trying to do filterless Betta tank, and it is looking almost ready to move him to his new tank!
Reviewed in the United States on September 2, 2026 by Shopaholic
    • Tabs dissolved instantly cloudy aquarium
Size: 10 Ct (Pack of 1)
The tablets are unstable as soon as you put them in the water. Dissolved instantly and turned the water chalky white. I would not purchase unless you get a different lot and company says that they will not fall apart before you can place them under the gravel.
Reviewed in the United States on February 6, 2026 by Michael
    • Great product
Size: 10 Ct (Pack of 1)
These were great for my plants in the tank. I noticed a huge difference right away! Very effective. Will be buying more in bulk.
Reviewed in the United States on August 16, 2026 by Dre

Can't find a product?

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