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

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

Product ID: 6666690

Details

Brand
API
Global Trade Identification Number
Item Form
Tablets
Item Weight
13 g
Specific Uses For Product
Aquarium Plant

⏳Monthly nutrient release for lasting vitality

⚡Essential iron, potassium & carbon blend

🌱Strong root growth booster

¥3679

Duties & taxes included

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌿 Elevate your aquarium’s green game—because thriving roots mean stunning aquatic vibes!

TRUSTED LEGACY - Backed by 50+ years of API innovation for aquarium excellence.
FISH SAFE RELIABLE - Formulated to be safe for tropical fish, ensuring harmony in your aquatic ecosystem.
ROOT POWER UNLEASHED - Promotes vigorous root development for lush, thriving freshwater plants.
NUTRIENT RICH FORMULA - Packed with iron, potassium, and carbon to fuel vibrant aquatic growth.
EFFORTLESS MONTHLY CARE - Simple tablet dosing every month keeps your aquarium plants flourishing.

API ROOT TABS Freshwater Aquarium Plant Fertilizer delivers essential nutrients like iron, potassium, and carbon directly to plant roots, promoting strong growth and vibrant health. Designed for monthly use, these tablets ensure your freshwater aquarium plants get a vigorous start and sustained vitality, all while being safe for tropical fish. Trusted by aquarists for over 50 years, API offers a proven solution to keep your underwater garden lush and thriving.

Specifications

ASIN	B003OYMOWQ
Best Sellers Rank	#3,501 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #143 in Garden Fertilizers
Brand Name	API
Coverage	Full
Customer Reviews	4.4 4.4 out of 5 stars (6,450)
Global Trade Identification Number	00317163035771
Item Form	Tablets
Item Type Name	Aquarium Plant Fertilizer
Item Weight	13 g
Manufacturer	Mars Fishcare
Mixing Ratio	1:30
Model Number	577C
Number of Items	72
Number of Packs	1
Part Number	577C
Specific Uses For Product	Aquarium,Plant Growth,Root Development
Target Species	Aquarium Plants
UPC	317163035771
Unit Count	10 Count

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