Seachem Flourish Excel 500 ml – Liquid Carbon Source for Aquatic Plants & Algae Control
Rs. 1,578.00
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Seachem Flourish Excel 500 ml – Liquid Carbon Source for Aquatic Plants & Algae Control
Rs. 1,578.00
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Seachem Flourish Excel 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. A trusted choice from Seachem 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 where pressurised CO₂ is impractical. Remember it is a carbon source, not a nutrient fertilizer, so you still dose a fertilizer alongside it. For an Indian-made liquid carbon alternative, 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.
- Trusted Seachem quality — a respected planted-tank brand.
- 500 ml — a long-lasting size.
Benefits
Immediate: An easy carbon boost from day one, with no CO₂ gear.
Short-term: Fuller, healthier growth and a tool against spot algae.
Long-term: A thriving low-tech planted tank without the cost of pressurised CO₂.
How It Works
Dosed into the water, Flourish Excel provides a source of 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
- Large high-tech tanks better served by pressurised CO₂
Specifications
| Specification | Detail |
|---|---|
| Type | Liquid carbon source (CO₂ alternative) |
| Use | Plant carbon boost & spot algae control |
| Size | 500 ml |
| Dosing | Daily, by tank volume |
| Brand | Seachem |
Problems It Solves
No CO₂ system: an easy carbon boost. Slow, leggy growth: more carbon for fuller plants. Spot algae: a targeted tool to knock it back.
Flourish Excel vs Other Options
| Option | Best for |
|---|---|
| Seachem Flourish Excel | Premium liquid carbon |
| Sunken Garden Liquid CO₂ Boost | Value liquid carbon (India-made) |
| Sunken Garden Green | Nutrients (use alongside) |
Expert Recommendation
For a low-tech or nano tank, liquid carbon is a great step up from nothing. Dose Flourish Excel daily alongside a complete fertilizer like Sunken Garden Green, and start at the lower dose if you keep sensitive plants such as vallisneria or mosses.
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 Flourish Excel?
Daily, by your tank’s water volume, following the Seachem label.
Does Flourish Excel kill 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 Flourish Excel harm plants?
Some sensitive plants (certain vallisneria, mosses, liverworts) can react — start at a low dose to test.
Excel or a CO₂ system — which is better?
Excel is easier for low-tech and nano tanks; pressurised CO₂ gives the strongest growth in demanding high-tech tanks.
Do I still need fertilizer?
Yes — carbon and nutrients are different. Use a complete fertilizer for the nutrients plants need.
When should I dose it?
With the lights on, when plants are photosynthesising, for best uptake.
What size is this?
This listing is the 500 ml bottle.
Related Products & Guides
Pair with: Sunken Garden Green. Alternative: Sunken Garden Liquid CO₂ Boost. Collections: Aquarium Fertilizer, Planted Tank Setup. Guides: Best Liquid Fertilizer, Liquid vs Dry Fertilizer.
Conclusion
Seachem Flourish Excel is a premium, easy way to give a low-tech or nano planted tank more carbon for fuller growth, plus a handy tool against spot algae. Dose it daily alongside a complete fertilizer for the best results.
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.
