Seachem Flourish Iron
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Concentrated iron supplement for aquarium plants — readily absorbable Fe²⁺
Seachem Flourish Iron — ideal for iron deficiency and red plants
✅ Level: Easy — Dose on non-Flourish days. No special equipment needed.
Seachem Flourish Iron is a highly concentrated iron supplement specifically for aquarium plants. Iron is essential for photosynthesis and chlorophyll formation — a deficiency leads to yellow leaves and weak growth. The formula contains iron in a readily absorbable form (Fe²⁺) for rapid uptake by plants. Intensifies green and red leaf colors. Safe for fish and shrimp.
🌿 Product specifications
| Type | Concentrated iron supplement |
| Iron type | Readily absorbable Fe²⁺ |
| Dosage | 5 ml per 200 liters |
| Usage | On days without Flourish dosing |
| Ideal iron level | 0.1–0.5 mg/l |
| Safety | Safe for fish and shrimp |
| Brand | Seachem |
🚚 Delivery & warranty
- Fast delivery from our store — ready for immediate use
- Shipping Tuesday or Friday → Read more about shipping
- Delivery with track & trace, usually within 1–2 business days
- Problem with your order? We'll solve it together. Contact our customer service.
- Free shipping from €59,-
✂️ Usage tips
Dose 5 ml per 200 liters on days when you do not dose Flourish. Regularly test the iron content — the ideal value is between 0.1–0.5 mg/l. Combine with Seachem Flourish for a complete plant nutrition with all micro-elements.
💡 Tip
Particularly effective for red plants such as Rotala and Ludwigia — red colors in aquarium plants are highly dependent on sufficient iron. Flourish Iron provides the iron boost red plants need for intense colors.
❓ Frequently asked questions
What is the difference with Seachem Flourish?
Flourish provides all micro-elements and trace elements. Flourish Iron exclusively provides iron in a higher concentration — ideal as a supplement for iron deficiency or for plants with high iron requirements.
How do I know if my plants have an iron deficiency?
Yellow or pale leaves (chlorosis) are a clear sign of iron deficiency. Test the iron level and start with Flourish Iron if the value is below 0.1 mg/l.
Is Flourish Iron safe for shrimp?
Yes — Seachem Flourish Iron is safe for all aquarium inhabitants, including shrimp and snails.
Do you have another question? Feel free to contact us — we are happy to help you make the right choice for your aquarium.
