Iron is the most common deficiency in aquaponics: young leaves turn yellow while their veins stay green. Chelated iron supplies protected iron that remains available to the roots. Choose the form according to the pH of the water: EDTA stays stable up to a pH of about 6.5, DTPA up to about 7.5, and EDDHA up to 9, which makes it the form for hard, alkaline water.
DTPA is the most common choice in aquaponics, where pH usually sits between 6.8 and 7.2. All these forms are dosed in small amounts, and the result shows on the new leaves. The articles Iron deficiency in aquaponics and Plant deficiencies in aquaponics explain the diagnosis in detail.
Frequently asked questions
Related articles
Beginner aquaponist
Iron Deficiency in Aquaponics
Iron deficiencies are among the most common problems encountered by aquaponic growers. Yellow leaves, slowed growth, and plants that stagnate despite clear water and a functioning nitrogen cycle are often the first visible signs of a lack of absorbable iron.
Read the article
Beginner aquaponist
Growing tomatoes in aquaponics
Hungry for nutrients and a lover of warmth, the tomato finds aquaponics an ideal growing environment. This comprehensive guide takes you from choosing a variety through to harvest, covering pH, hand pollination, and pruning, to produce flavoursome fruit throughout the
Read the article
Beginner aquaponist
Les aromatiques en aquaponie
Rapides, généreuses et peu exigeantes, les plantes aromatiques comptent parmi les cultures les plus gratifiantes pour débuter en aquaponie. Basilic, menthe et ciboulette poussent vite, se récoltent en continu et pardonnent volontiers les petits déséquilibres du système.
Read the article
Advanced aquaponist
Chauffer sa serre en hiver
Quand les gelées arrivent, une serre aquaponique se refroidit vite et met poissons, bactéries et cultures en danger. Bien isolée et bien régulée, elle traverse l'hiver sans rupture et pour un coût maîtrisé.
Read the article