are they copper free?

yes. no copper. api has a phone number you can call for more info. i have found them very helpful when i had questions.

My tank is 30 gl I need use how many tablets?

The instructions say you should use 1 tablet for every 30 square inches of gravel surface area. Most 29 gallons are 30" x 12", which is a total of 360 square inches. Divide that by the recommended 30 square inches per tablet and you will need to use 12 tablets for the aquarium, once per month. Of course, that's providing your aquarium is 30" x 12".

i have a 20 gallon tank, can i use theese with the liquid c02 booster and leaf zone or flourish excel?? or will i be adding to much.

I use them with leaf zone and flourish Excel... no problem so far...I do not treat the whole tank with this tabs... I only add them to specific plants that need more nutrients such as my aponogetons ( bulbs)

I need use how many tablets for 30 gl?

I put all 10 inside a 60 gal. I guess just put 5 for the 30 gal.

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Root TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box,Tablets

Root TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box,Tablets

Product ID: 80259218

Details

Brand
API
Global Trade Identification Number
Item Form
Tablets
Item Weight
29 Grams
Specific Uses For Product
Plant Growth

⏳Monthly slow-release tablets

⚡Essential nutrient blend (Fe, K, C)

🌱Strong root growth booster

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Description

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

TRUSTED LEGACY - Backed by 50+ years of API’s research-driven aquarium expertise for guaranteed results.
ROOT POWER UNLEASHED - Promotes vigorous root development for lush, thriving aquatic plants.
NUTRIENT RICH FORMULA - Packed with iron, potassium, and carbon to fuel vibrant plant health.
EFFORTLESS MONTHLY CARE - Just one tablet per month keeps your aquarium plants flourishing with minimal effort.
FISH SAFE ECO FRIENDLY - Formulated to be safe for tropical fish, ensuring a balanced, healthy ecosystem.

API ROOT TABS Freshwater Aquarium Plant Fertilizer delivers a potent, slow-release nutrient formula designed to promote strong root growth and vibrant aquatic plants. Each tablet contains essential minerals like iron, potassium, and carbon, supporting both new and established plants. Safe for tropical fish and easy to use with monthly dosing, these tablets help maintain a lush, healthy freshwater aquarium environment backed by over five decades of API’s trusted innovation.

Specifications

ASIN	B003OYMOWQ
Best Sellers Rank	#21,937 in Garden & Outdoors ( See Top 100 in Garden & Outdoors ) #891 in Multi-Purpose Fertilizers
Brand	API
Brand Name	API
Country of Origin	USA
Coverage	Full
Customer Reviews	4.5 out of 5 stars 5,943 Reviews
Global Trade Identification Number	00317163035771
Included Components	API ROOT TABS Freshwater Aquarium Plant Fertilizer 0.4-Ounce 10-Count Box
Item Form	Tablets
Item Type Name	Aquarium Plant Fertilizer
Item Weight	29 Grams
Manufacturer	Aquarium Pharmaceuticals
Mixing Ratio	1:30
Model Number	577C
Specific Uses For Product	Plant Growth,Aquarium,Root Development
Target Species	Aquatic Plants
UPC	317163035771
Unit Count	2 Count

Reviews

D**E

30.10.2025

K**E

2.01.2018

B**G

26.03.2026

M**N

21.03.2026

T**A

6.06.2022

S**R

26.01.2025

G**D

16.02.2026

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