- Sku: 515
- Vendor: Seachem
Seachem Flourish
The foundation of a healthy planted aquarium. Seachem Flourish is a comprehensive supplement that delivers the micro elements, trace elements, and other nutrients aquatic plants need, including gluconate iron, calcium, magnesium, and a broad range of trace elements, vitamins, and amino acids. It is the classic starting point for a planted-tank dosing routine and is safe for fish and invertebrates such as shrimp.
Feed your freshwater aquarium plants a complete diet and browse the rest of our additives & supplements to round out your routine.
Why Flourish
Unlike all-in-one products, Flourish focuses on the micro and trace elements plants deplete first, and it deliberately does not contain significant nitrogen or phosphorus. That means you can build a healthy micronutrient base without pouring in the macro nutrients that also feed algae, then dose nitrogen, phosphorus, and potassium separately only as your tank actually needs them. The result is greener growth and better color with more control.
How to Use It
Shake well before use. A typical dose is 5 mL (one capful) per 250 L (about 60 US gallons) once or twice a week. In heavily planted, high-light, or CO2-injected tanks you can dose more often, and pair Flourish with a dedicated trace supplement when growth is rapid. Always follow the directions printed on your bottle and adjust to how your plants respond.
Available Sizes
| Size | Best for |
|---|---|
| 100 mL | Small planted aquariums or trying it out |
| 250 mL | Standard planted tanks |
| 500 mL | Best value for larger or multiple tanks |
Specifications
| Brand | Seachem |
| Product | Flourish, comprehensive planted-tank supplement |
| Provides | Micro elements, trace elements, iron, calcium, magnesium |
| Contains N or P | No significant nitrogen or phosphorus |
| Sizes | 100 mL, 250 mL, 500 mL |
| Water type | Freshwater planted aquariums |
| Shrimp & invert safe | Yes |
| Origin | Made in the USA (Madison, GA) |
Recommended Pairings
- Seachem Flourish Trace: top up extra trace elements when growth is rapid.
- Seachem Flourish Iron: extra iron for lush green and red plants.
- Flourish Nitrogen, Phosphorus, and Potassium: dose the NPK macros as needed.
- Seachem Flourish Tabs: root tabs for heavy root-feeders like swords and crypts.
- Seachem Plant Pack: a bundle that includes Flourish, Flourish Iron, and Flourish Excel.
Frequently Asked Questions
What is the difference between Flourish and Flourish Trace?
Flourish is the comprehensive base supplement covering micro elements, trace elements, iron, and more. Flourish Trace is a focused trace-element top-up you add when fast growth uses those elements up faster than the rest. Many planted keepers use both.
Will Flourish cause algae?
Flourish contains no significant nitrogen or phosphorus, the macros that most often feed algae, so it is a safe micronutrient base. You control nitrogen, phosphorus, and potassium separately with the dedicated Flourish supplements.
Is it safe for shrimp and snails?
Yes. Flourish is formulated to be safe for fish and invertebrates such as shrimp when dosed as directed. Dose gradually in sensitive shrimp tanks and observe.
Which size should I buy?
Match the bottle to your water volume and number of tanks. The 100 mL is great for a single small tank, while the 500 mL is the best value for larger or multiple planted aquariums.
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Seachem Flourish
