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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🌿 Grow your underwater jungle with confidence!

TRUSTED LEGACY - From API, a 50+ year leader in innovative aquarium care solutions.
FISH SAFE FORMULA - Designed to nourish plants without harming your tropical fish community.
ROOT POWER UNLEASHED - Promotes vigorous root development for lush, thriving aquarium plants.
MONTHLY NUTRIENT RECHARGE - Easy-to-use tablets deliver steady nutrients every month—no guesswork needed.
SCIENTIFICALLY FORMULATED - Packed with iron, potassium, and carbon to fuel vibrant aquatic plant health.

API ROOT TABS Freshwater Aquarium Plant Fertilizer is a 10-count box of 0.4-ounce tablets designed to promote strong root development and vibrant growth in freshwater aquarium plants. Formulated with essential nutrients like iron, potassium, and carbon, these slow-release tablets are added monthly to the gravel bed to ensure plants thrive safely alongside tropical fish. Backed by over 50 years of API’s research-driven aquarium care expertise.

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Brand	API
Item Weight	29 Grams
Item Form	Tablets
Specific Uses For Product	Plant Growth,Aquarium,Root Development
Global Trade Identification Number	00317163035771
Manufacturer	Aquarium Pharmaceuticals
Number of Items	72
UPC	317163035771
Net Quantity	2 Count
Department	Unisex-Adult
Country of Origin	USA
Item model number	577C
Product Dimensions	12.38 x 0.64 x 16.51 cm; 29 g
ASIN	B003OYMOWQ

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

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