Seachem Flourish 500ml
Seachem Flourish 500ml is a planted-aquarium supplement. Match its named nutrient or function to the planted aquarium and calculate any dose from actual water volume.
Quick Facts
- Product type: Planted-aquarium supplement
- Listed size / rating: 500ml
- Selected option: Check the chosen variant before ordering.
- Primary use: Planted-aquarium supplement
Is this for you?
- The named nutrient or function matches the planted aquarium.
- You know the true water volume or root-zone requirement.
- You can observe plant growth and algae response.
| Component | Concentration |
|---|---|
| Iron (Fe) | 0.05 mg/L |
| Phosphorus (P) | 0.02 mg/L |
| Nitrogen (N) | 0.10 mg/L |
FAQ
What is the recommended dosage for Seachem Flourish 500ml?
Dosage should be calculated based on the actual water volume of the aquarium. Follow the specific nutrient function listed on the product label and adjust accordingly.
Can Seachem Flourish be used in a fish-only tank?
No, Seachem Flourish is specifically designed for planted aquariums and is not suitable for fish-only tanks.
How long does it take to see plant growth after using Flourish?
Plant growth response may vary, but visible improvements typically appear within 2 to 4 weeks with consistent use.

David Ross –
Used Flourish in a 20-gallon planted tank. My stem plants grew stronger and leaves became fuller after two months. No algae issues despite high light. The dosage was easy to calculate based on tank volume.
Boris Kelly –
Good for promoting plant health. I added it weekly and noticed better coloration in my java fern and anubias. A little more iron would be helpful, but overall effective.
Olivia MacLeod –
My tank has been stable for over six months with regular Flourish use. Plants are thriving and I haven’t had to supplement with anything else. Easy to measure and mix in.