

🌿 Feed your freshwater jungle like a pro — don’t let your plants miss out!
API Leaf Zone is a 16-ounce freshwater aquarium plant fertilizer designed to promote strong, colorful, and healthy aquatic plant growth. It contains essential nutrients like chelated iron and potassium, formulated for rapid absorption through leaves. Ideal for weekly dosing at 5 ml per 10 gallons, it prevents yellowing and decay, supporting lush, vibrant plants in freshwater tanks. Trusted by aquarists for over 50 years, API Leaf Zone ensures your aquatic plants thrive effortlessly.
| ASIN | B007Q5Q6PA |
| ASIN | B007Q5Q6PA |
| Best Sellers Rank | #131,165 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,194 in Aquarium Water Treatments |
| Brand Name | API |
| Color | Green |
| Customer Reviews | 4.7 4.7 out of 5 stars (104) |
| Date First Available | March 31, 2012 |
| Date First Available | March 31, 2012 |
| Directions | Add 5 ml per 10 gallons of aquarium water. Dose weekly. For rapid absorption, use in freshwater aquariums containing freshwater fish and plants only. Promotes healthy growth of aquatic plants, encourages lush, green growth, and prevents yellow, decaying leaves using essential nutrients such as chelated iron and potassium. |
| Item Dimensions LxWxH | 9 x 2.5 x 2.5 inches |
| Item Package Dimensions L x W x H | 8.78 x 3.23 x 2.99 inches |
| Item Weight | 1.2 Pounds |
| Item model number | 576J |
| Item model number | 576J |
| Manufacturer | Mars Fishcare North America |
| Manufacturer | Mars Fishcare North America |
| Material | Rubber |
| Model Name | 576J |
| Number of Items | 1 |
| Product Dimensions | 9 x 2.5 x 2.5 inches; 1.21 Pounds |
| Size | 1.1 Pound (Pack of 1) |
| Specific Uses for Product | Plant Food,Plant Growth |
| Target Audience Keyword | fish |
L**E
Complete plant food
Contains all the necessary nutrients to support healthy plant growth. Just dose 1-2x/ week especially after water change keeps my Amazon swords,water wisteria,guppy grass and emmersed plants such as Pothos and Peace Lily thriving well!
J**M
Works Great
This product adds potassium and iron to the water column and has been my go-to for my low tech tanks over the years. Stem plants thrive and green up with this product by simply following the NPK "rule". Nitrogen is alread generated through the filter's biomedia; Potassium is added through this product; and phosphate is generated as a bi-product of fish food. The Iron in this product does the greening. Note that for heavily rooted plants placed in gravel, you will also need to add root tabs for excellent results.
A**R
great plant food
I have been using Leaf Zone for a long time. I add it to my weekly water changes as per instruction. It keeps my plants looking healthy and green. I recommend this product highly.
P**N
Keeps plants super healthy and green.
Shipping was insane fast
O**K
Like the product packaging wasn't the best
When I got the bottle the liquid was all over the package on the inside. But the product seems to work great.
B**Y
It is what it is
Something that works well for my anubias and hava ferns.
B**N
Arrived on time and was exactly what I ordered. I have a planted fish tank, it's hard to find Leaf Zone in my area. The fact it was on sale was a bonus.
S**S
Within one day of applying my plants were greener, within a week they were visibly healthier and growing, a month in I'm trimming them back. It does add a tea color hue to your tank but I like it. 👍 👍
S**R
Works well for my aquarium plants
A**R
My plants are absolutely thriving with API leaf zone added I run freshwater tanks(3) with ok lighting and no CO2 and my plants are getting big fast!!
J**L
Been using this product over a year and wanted to give it an honest chance, so here’s my honest review! I bought this to help boost the growth of my aquarium plants in my fish tanks. My plants aren’t needy, they’re pretty low maintenance to be honest. I found my plants slowly dying after a week or two of a water change so wanted to try a fertilizer as I don’t have O2 pumping into my tanks. I started using root tabs a few months before, and I really noticed a difference VS not noticing any growth or recovery from dying plants using leaf zone!
Trustpilot
2 weeks ago
4 days ago