Seachem Flourish Excel 250ml – Liquid Carbon Source for Aquatic Plants & Algae Control | India
250 ml
Rs. 1,020.00
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Seachem Flourish Excel 250ml – Liquid Carbon Source for Aquatic Plants & Algae Control | India
Rs. 1,020.00
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Shipping calculated at checkout.
Seachem Flourish Excel 250ml is a premium liquid carbon source for planted aquariums — a simple alternative to a pressurised CO₂ system that gives aquatic plants the carbon they need for healthy growth, while also helping control algae. Dosed daily into the water, it boosts plant growth in low-tech and nano tanks without cylinders or regulators, and spot-dosing helps knock back nuisance algae. This is the handy 250 ml size — a trusted Seachem choice for planted tanks in India.
What is Seachem Flourish Excel?
Short answer: A premium liquid carbon (bioavailable carbon) supplement that boosts plant growth without a CO₂ system.
Carbon is the nutrient plants use most, and it usually limits growth more than anything else. Flourish Excel provides a source of bioavailable organic carbon you simply dose into the water — ideal for low-tech and nano planted tanks. It is a carbon source, not a nutrient fertilizer, so you still dose a fertilizer alongside it. For a value India-made option, see Sunken Garden Liquid CO₂ Boost.
Key Features
- Premium liquid carbon — a CO₂ alternative with no equipment.
- Boosts plant growth — more carbon for fuller, healthier plants.
- Algae control — spot-dosing helps knock back algae.
- Easy daily dosing — measure and pour.
- Handy 250 ml size — ideal for nano and smaller tanks.
How It Works
Dosed into the water, Flourish Excel provides organic carbon that plants use for photosynthesis, supplementing the limited CO₂ naturally present. Spot-dosed onto problem algae, it also disrupts the algae. Use it alongside a complete fertilizer such as Sunken Garden Green for the nutrients carbon does not provide. More in our best liquid fertilizer guide.
How to Use
- Dose daily by your tank’s water volume, following the Seachem label.
- Add it with the lights on for best uptake.
- For spot algae, dose directly onto the affected area with the filter briefly off.
- Continue dosing a nutrient fertilizer alongside it.
Suitable For
- Low-tech and nano planted tanks without CO₂
- Hobbyists wanting a carbon boost without equipment
- Tackling spot algae on hardscape and slow-growing plants
Not Ideal For
- As a replacement for nutrient fertilizer — it is carbon, not NPK/iron
- Sensitive plants (some vallisneria, mosses, liverworts) which can react — start low
Specifications
| Specification | Detail |
|---|---|
| Type | Liquid carbon source (CO₂ alternative) |
| Use | Plant carbon boost & spot algae control |
| Size | 250 ml |
| Dosing | Daily, by tank volume |
| Brand | Seachem |
Flourish Excel vs Other Options
| Option | Best for |
|---|---|
| Flourish Excel 250ml | Premium liquid carbon, smaller size |
| Flourish Excel 500ml | Better value for larger tanks |
| Sunken Garden CO₂ Boost | Value liquid carbon (India-made) |
Frequently Asked Questions
What is Seachem Flourish Excel?
A premium liquid carbon source that boosts planted-tank growth without a pressurised CO₂ system, and helps control algae.
Is Flourish Excel a fertilizer?
No — it is a carbon source, not a nutrient fertilizer. Dose a complete fertilizer alongside it for NPK and iron.
How often do I dose it?
Daily, by your tank’s water volume, following the Seachem label.
Does it control algae?
Spot-dosing onto problem algae helps knock it back, and a carbon boost helps plants out-compete algae.
Is it safe for fish and shrimp?
At the recommended dose, yes. Start low and avoid overdosing, especially in shrimp tanks.
Can it harm plants?
Some sensitive plants (certain vallisneria, mosses, liverworts) can react — start at a low dose to test.
250ml or 500ml — which should I buy?
250 ml suits nano and smaller tanks; the 500 ml is better value for larger tanks or daily dosing.
Do I still need fertilizer?
Yes — carbon and nutrients are different. Use a complete fertilizer for nutrients.
When should I dose it?
With the lights on, when plants are photosynthesising.
What size is this?
This listing is the 250 ml bottle.
Related Products & Guides
Pair with: Sunken Garden Green. Larger size: Flourish Excel 500ml. Collections: Aquarium Fertilizer, Planted Tank Setup. Guides: Best Liquid Fertilizer, Liquid vs Dry Fertilizer.
Conclusion
Seachem Flourish Excel 250ml is a premium, easy way to give a nano or low-tech planted tank more carbon for fuller growth, plus a handy tool against spot algae. Dose it daily alongside a complete fertilizer.
Shipping & Returns
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We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.
