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

Product ID: 6666690

Details

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

⚡Boosts root growth fast

🌱10 nutrient-rich tablets

🧪Iron, potassium & carbon blend

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฿1080

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Description

🌿 Grow roots, not regrets — your aquarium’s secret weapon!

ROOT POWER UNLEASHED - Promotes vigorous root development for lush, thriving aquatic plants.
TRUSTED AQUARIUM CARE - Backed by 50+ years of API innovation for reliable, research-driven plant nutrition.
ESSENTIAL NUTRIENT BOOST - Packed with iron, potassium, and carbon to fuel vibrant plant health.
SAFE FOR YOUR AQUATIC FAMILY - Formulated to be safe for tropical fish and shrimp, ensuring harmony in your tank.
MONTHLY MAINTENANCE MADE EASY - Just one tablet per month keeps your aquarium plants flourishing effortlessly.

API ROOT TABS Freshwater Aquarium Plant Fertilizer delivers a potent monthly dose of essential nutrients—iron, potassium, and carbon—to promote strong root growth and vibrant aquatic plants. Safe for tropical fish and shrimp, these 10 tablets ensure your freshwater aquarium stays lush and healthy with minimal effort, backed by over 50 years of trusted API expertise.

Specifications

ASIN	B003OYMOWQ
Best Sellers Rank	#3,069 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #128 in Garden Fertilizers
Brand Name	API
Coverage	Full
Customer Reviews	4.5 4.5 out of 5 stars (6,313)
Global Trade Identification Number	00317163035771
Item Form	Tablets
Item Type Name	Aquarium Plant Fertilizer
Item Weight	13 Grams
Manufacturer	Mars Fishcare
Mixing Ratio	1:30
Model Number	577C
Number of Items	72
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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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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Sold byAmazon ThailandDelivered 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 Thailand.

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