Is this product safe for fish

Yes. I get a great return on my aquatic plants and doesn't hurt the fish. Been using it now for a few years. Fyi..... my Angels are breeding and giving off healthy broods.

Does this product have copper in it?

There is a very small amount. Small amounts like in this product are still safe from snails, shrimp, ect. If copper is at the bottom of the list it’s safe, you want to watch out for when Cooper it towards the top of the list

I am new at keeping live plants in fact I am waiting on my first order. I purchsaed this plant food but was also told I needed Flourish Excel, the ingredients are organic carbon. Are the these the same thing, ( plant food) ? and do I need to use both at the same time? Thank you!

I have found the following to be helpful. If you are comfortable with the API products you will also want to order API co2 booster. Every four months I also insert into the soil API plant food. I used these two products for the past year with my planted tanks. I currently have three planted tanks. All are flourishing and doing great.

Will this work with an under gravel filter system?

Yes , it works with undergravel filtration systems.

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API Leaf Zone Freshwater Plant Fertilizer, 16 OZ, Multicolor

Product ID: 392217800

Details

Brand
API
Item form
Liquid
Item weight
136 g
Liquid volume
0.5 Liters
Specific uses for product
Freshwater

⚡Rapid leaf absorption

🌿Iron & potassium boost

💧16 OZ liquid formula

EC$104

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Elevate your aquarium’s green game—because your plants deserve the spotlight!

FAST TRACK GROWTH - Formulated for rapid absorption directly through plant leaves—see results faster.
SYNERGISTIC BOOST - Pairs perfectly with API Root Tabs for a full-spectrum plant nutrition system.
VIBRANT LEAF POWER - Infused with iron & potassium for eye-catching, colorful aquarium plants.
TRUSTED BY THOUSANDS - Highly rated (#56 in Aquarium Water Treatment) with 4.6 stars from over 7,800 users.
EFFORTLESS AQUARIUM GARDENING - Simplifies freshwater plant care with easy dosing—just 5 ml per 10 gallons.

API Leaf Zone Freshwater Plant Fertilizer is a 16 OZ liquid formula enriched with iron and potassium, designed for rapid absorption through aquarium plant leaves. Ideal for freshwater planted tanks, it promotes vibrant, colorful foliage and accelerated growth. Best used alongside API Root Tabs, it offers a simple, effective solution trusted by thousands of aquarium enthusiasts.

Specifications

ASIN	B0002566TW
Best Sellers Rank	#3,097 in Pet Supplies ( See Top 100 in Pet Supplies ) #13 in Aquarium Water Quality Testing & Treatment
Brand	API
Brand Name	API
Country of Origin	USA
Coverage	Freshwater planted aquariums
Customer Reviews	4.6 out of 5 stars 7,861 Reviews
Global Trade Identification Number	00317163105764
Item Form	Liquid
Item Type Name	API Leaf Zone Freshwater Plant Fertilizer, 16 OZ
Item Weight	136 g
Item form	Liquid
Item weight	136 g
Liquid Volume	473 Milliliters
Liquid volume	473 Milliliters
Manufacturer	API
Mixing Ratio	5 ml per 10 US gallons
Model Number	576J
Number of Items	1
Number of Packs	1
Part Number	576J
Specific Uses For Product	Freshwater Planted Aquarium, Plant Growth
Specific uses for product	Freshwater Planted Aquarium, Plant Growth
Target Species	Aquarium Plants
UPC	317163105764 019014705764 317163105672
Unit Count	1 Count

Reviews

P**Z

Good

1.09.2025

L**E

Good

Doing good job ...new roots and leafs generated

22.05.2024

R**Y

Worth Buying

Does the job well. Plants grow healthy on my fish tank.

11.05.2022

Y**E

No Change at all...

whether i had it in tank or not, my plants will still grow slow. it just kept giving a better environment for the algae to grow instead of the plants....

25.07.2024

S**R

API Leaf Zone Plant Fertilizer,

Excellent

7.09.2026

L**N

Must have for aquarium plants !!!

Arrived quickly.. easy to follow instructions !!! Keep my aquarium plants green !!! Safe for my fish, I’ve never had any issues with them when using this product !!! Definitely effective and a must have if you have live plants in your aquarium !!! I love that you can use the cap to pour the concentration in to measure !!!

29.05.2026

S**D

Excellent product

Excellent product ,very good for planted aquarium.

14.04.2022

S**I

Top

Résultat très rapide et très bon marketplace Je recommande !!

15.11.2023

A**R

Its magic

This product is magic it saved my aquarium plants

5.12.2025

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EC$104

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Saint Vincent and the Grenadines.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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