---
product_id: 6627540
title: "Flourish Excel Bioavailable Carbon - Organic Carbon Source for Aquatic Plants 50ml"
brand: "seachem"
price: "S$15"
currency: SGD
in_stock: true
reviews_count: 13
category: "Seachem"
url: https://www.desertcart.sg/products/6627540-flourish-excel-bioavailable-carbon-organic-carbon-source-for-aquatic-plants
store_origin: SG
region: Singapore
---

# Bioavailable organic carbon Iron-reducing for better nutrient uptake Supports photosynthetic intermediates Flourish Excel Bioavailable Carbon - Organic Carbon Source for Aquatic Plants 50ml

**Brand:** seachem
**Price:** S$15
**Availability:** ✅ In Stock

## Summary

> 🌱 Elevate your aquatic garden with the carbon boost it craves!

## Quick Answers

- **What is this?** Flourish Excel Bioavailable Carbon - Organic Carbon Source for Aquatic Plants 50ml by seachem
- **How much does it cost?** S$15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/6627540-flourish-excel-bioavailable-carbon-organic-carbon-source-for-aquatic-plants)

## Best For

- seachem enthusiasts

## Why This Product

- Trusted seachem brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Enhance Iron Absorption:** Promotes ferrous iron (Fe+2) uptake, fueling healthier, greener plants
- • **Maintain Safe pH Levels:** Perfect for CO2 users aiming to avoid dangerous pH drops in their tanks
- • **Optimize Photosynthesis:** Introduces key photosynthetic intermediates to maximize aquatic plant vitality
- • **Boost Plant Growth Naturally:** Delivers bioavailable organic carbon as a powerful CO2 alternative or supplement
- • **Versatile for All Life Stages:** Safe and effective for all aquatic plants, from beginner setups to advanced aquascapes

## Overview

Seachem Flourish Excel is a 50ml liquid organic carbon source designed to enhance aquatic plant growth by providing bioavailable carbon and photosynthetic intermediates. It serves as an effective alternative or complement to CO2 injection, helping maintain stable pH levels while promoting iron absorption for healthier plants. Trusted by aquarists for all life stages, it supports vibrant, algae-resistant aquascapes.

## Description

Flourish Excel is a source of bioavailable organic carbon. All plants require a source of carbon. This is typically obtained from CO2, but, may also be derived from simple organic compounds (such as photosynthetic intermediates). The use of either CO2 injection or Flourish Excel does not necessarily negate the use of the other. Because the processes of producing photosynthetic intermediates and building onto them occur simultaneously, one can derive a substantial benefit with the use of Flourish Excel either alone or in conjunction with CO2 . The combination is particularly ideal for situations when continuing to add CO2 could result in dangerously low pH levels. Flourish Excel also has iron reducing properties which promote the ferrous state of iron (Fe+2), which is more easily utilized by plants than ferric iron (Fe+3).

Review: Works well; be careful - Helped me get rid of my black beard algae! Be careful not to overdose or it will kill your fish!
Review: Good as an algeacide - Not even close to the same results as a gas co2 dosing system. It foes work well as an algeacide.

## Features

- Bioavailable organic carbon source
- Use as an alternative to CO2 injection or in addition to it
- Introduces photosynthetic intermediates
- Age range description: All Life Stages

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005XOWO52 |
| ASIN  | B005XOWO52 |
| Allergen Information | Yam Free |
| Best Sellers Rank | #112,880 in Pet Supplies ( See Top 100 in Pet Supplies ) #1,039 in Aquarium Water Treatments |
| Brand Name | Seachem |
| Customer Reviews | 4.3 4.3 out of 5 stars (209) |
| Date First Available  | January 14, 1998 |
| Global Trade Identification Number | 00000116045407 |
| Included Components | Liquid |
| Is Discontinued By Manufacturer  | No |
| Item Form | Liquid |
| Item Type Name | Aquarium Conditioner |
| Item Weight | 0.07 Kilograms |
| Item model number  | 454 |
| Liquid Volume | 50 Milliliters |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer  | Seachem Laboratories, Inc. |
| Manufacturer Part Number | 454 |
| Model Number | 454 |
| Product Dimensions  | 1.38 x 1.38 x 3.62 inches; 2.4 ounces |
| Target Species | Fish |
| UPC | 000116045407 |
| Unit Count | 50 Milliliters |

## Product Details

- **Brand:** Seachem
- **Item Form:** Liquid
- **Item Weight:** 0.07 Kilograms
- **Liquid Volume:** 50 Milliliters
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Flourish Excel Bioavailable Carbon - Organic Carbon Source for Aquatic Plants 50ml - Image 1](https://m.media-amazon.com/images/I/61dP952cOxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well; be careful
*by K***E on July 20, 2025*

Helped me get rid of my black beard algae! Be careful not to overdose or it will kill your fish!

### ⭐⭐⭐⭐ Good as an algeacide
*by X***X on August 26, 2023*

Not even close to the same results as a gas co2 dosing system. It foes work well as an algeacide.

### ⭐⭐⭐⭐⭐ Good
*by A***A on January 23, 2026*

I start used it today. Hopefully it'll works

## Frequently Bought Together

- Seachem Flourish Excel Bioavailable Carbon - Organic Carbon Source for Aquatic Plants 50ml
- Seachem Flourish Freshwater Plant Supplement - Aquarium Element and Nutrient Blend 100 ml, (Model: 515)
- Seachem Flourish Tabs Growth Supplement - Aquatic Plant Stimulant 10 ct

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-05-14*