Legend C4 Aery™

Legend C4 Aery™ is based on natural raw materials

A natural bioavailable source of carbon, humic & amino acids, and naturally-occurring phytohormones for aquarium plants on a natural basis

Legend C4 Aery™stimulators and components of the Krebs cycle is a series of chemical reactions used by all aerobic organisms to generate energy through the oxidization of acetate—derived from carbohydrates, fats, and proteins into carbon dioxide. The second stage of cellular respiration is the three-stage process by which living cells break down organic fuel molecules in the presence of oxygen to harvest the energy they need to grow and divide.

This metabolic process occurs in most plants, animals, and many bacteria.

Legend C4 Aery™is important for plants to grow well and compete effectively with algae. With too little carbon or CO2 in the aquarium,

Primary or supplementary source of carbon (compatible with CO2 supplementation).

Supply your aquarium plants with liquid and readily available carbon, which was produced on the basis of natural raw materials. The carbon fertilizer also contains potassium, and manganese, which accelerate growth and ensure healthy and vigorous plant growth.

The success is already visible after a few weeks – you should pay attention to the shoot tips and young leaves during this time!

The luxuriant and healthy growth of the aquarium plants massively suppresses the growth of algae. The entire aquarium appears healthier, greener, and more beautiful.


Sizes: 100 mL, 250 mL, 500 mL, 1 L, 5 L


Malic Acid      

Tri-Sodium Citrate     

Humic acid   

Fulvic acid     




Dosage: Shake well before using.

Depending on the planting and growing conditions: 1-3 ml per 100 l aquarium water, per day

Does not contain glutaraldehyde




  • For best results, use it together with Legend Essential and Legend Heaven or any Legend AIO formula
  • Do not overdose
  • Dose away from livestock or plants, where the water currents are the highest
  • Avoid contact with the solution and rinse with plenty of water if this happens
  • Do not ingest and keep out of reach of children and pets
  • Store at room temperature. Protect from light, heat and frost
  • For aquarium use only


C4 Aery MSDS 20230622.pdf


Shrimp Friendly

Storage: at room temperature. Protect from frost and heat. Keep out of reach of children and pets.

CAUTION: Do not eat drink or get into eyes. In case of eye exposure, promptly & thoroughly wash eyes with water & seek medical attention.

Use: For fertilization of ornamental plants in an aquarium only.
See the pack for detailed dosage recommendations. Note: Official guidance recommendations take precedence.

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Liquid carbon fertiliser

With potassium, iron, manganese and boron

Biological carbon fertilizer for aquarium plants

Carbon supply based on natural raw materials

Carbon is the most important nutrient for magnificent, healthy plants

Increases the competitive power of plants against algae

Immediate effect, directly available to plants