---
product_id: 51535668
title: "Flourish Excel Organic Nutrition, 100 ml"
brand: "seachem"
price: "229 kr"
currency: DKK
in_stock: true
url: https://www.desertcart.dk/products/51535668-flourish-excel-organic-nutrition-100-ml
store_origin: DK
region: Denmark
---

# Bioavailable Carbon Liquid Form Made in USA Flourish Excel Organic Nutrition, 100 ml

**Brand:** seachem
**Price:** 229 kr
**Availability:** ✅ In Stock

## Summary

> 🌟 Elevate Your Aquarium Game with Flourish Excel!

## Quick Answers

- **What is this?** Flourish Excel Organic Nutrition, 100 ml by seachem
- **How much does it cost?** 229 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/51535668-flourish-excel-organic-nutrition-100-ml)

## 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

- • **💡 Versatile Usage:** Use as a standalone solution or alongside CO2 injection for optimal results.
- • **🐟 Safe for All Fish:** Formulated for all life stages, ensuring a thriving ecosystem.
- • **🔬 Quality You Can Trust:** Crafted in the USA with allergen-free ingredients for peace of mind.
- • **🌊 Enhances Photosynthesis:** Introduces essential photosynthetic intermediates for vibrant plant health.
- • **🌿 Boost Your Aquarium's Growth:** Unlock the full potential of your aquatic plants with this organic carbon source.

## Overview

Seachem Flourish Excel is a 100 ml liquid organic carbon source designed for planted aquariums. It serves as an alternative or supplement to CO2 injection, enhancing photosynthesis and promoting robust plant growth. Safe for all fish life stages, this product is made in the USA and is allergen-free, ensuring a healthy aquatic environment.

## Description

SeachemFlourish Excel Organic Nutrition, 100 ml

## Features

- Bioavailable organic carbon source for the planted aquarium
- Use as an alternative to CO2 injection or in addition to it
- Introduces photosynthetic intermediates
- Country of origin:- United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Pet Type | Fish |
| Product Dimensions | 4.11 x 4.11 x 12.4 cm; 145.15 g |
| Item model number | 455 |
| Pet Life Stage | All Life Stages |
| Item Form | Liquid |
| Allergen Information | Abalone Free |
| Colour | clear |
| Size | 100 ml (Pack of 1) |
| Volume | 100 Millilitres |
| Number of Items | 1 |
| Quantity | 1 |
| Specific Uses | Active |
| Batteries required | No |
| Batteries Included | No |
| External Testing Certification | Não aplicável |
| Item Weight | 145 g |

## Product Details

- **Brand:** Seachem
- **Liquid volume:** 100 Millilitres
- **Item weight:** 145 g
- **Item form:** Liquid
- **Target species:** Aquatic Plants

## Images

![Flourish Excel Organic Nutrition, 100 ml - Image 1](https://m.media-amazon.com/images/I/610V-WB-EqL.jpg)

## Available Options

This product comes in different **Size Name** options.

## Questions & Answers

**Q: What causes this product to kill algae, and does it kill anything else (like beneficial bacteria)?**
A: I bought the Seachem Flourish Excel because it seems to be the best solution to a Black Beard Algae problem I'm having, and after studying what it does, and how it does it, I too was worried about the Beneficial Bacteria in my 2 large canister filters.Couldn't find a direct answer to that question, so I sent an e-mail directly to Seachem Laboratories. Here is my question to them and their reply......
Message: I have a 72 gal heavily planted community tank and am having an outbreak of Black Beard Algae. I purchased your product as it seems the best solution to the problem, but I need a question answered before I can use your product. I now understand how your product works, but will this product also kill off the Beneficial Bacteria inside the Seachem Matrix Bio-Media of my 2 large canister filters?! Crashing the cycle in my tank is not an option. Is this product (Flourish Excel) safe to use for the bacteria that maintains the nitrogen cycle of my tank, or will it kill the bacteria in my filter media along with the Black Beard Algae and crash the nitrogen cycle of my tank? Need a straight answer, please, Thank You
Seachem Support 10304 (Seachem Laboratories)
Sep 23, 2022, 16:31 ADT
Hi there, thanks for reaching out! 
 No, Excel will not affect your biological filtration if dosed appropriately. 
 Hope this helps! 
Seachem Support 10304
Needless to say, I am very relieved, and pleased. Now I can start the process of getting rid of that Black Beard Algae and not worry about crashing my nitrogen cycle. 2 Thumbs Up to Seachem Laboratories!

**Q: are they copper free?**
A: No. They contain 0.001% copper. Though people have used them in shrimp tanks without a problem, others have had shrimp die, particularly if the tablet got stirred up from the substrate (rescaping, fish burrowing, etc). If there's a chance of your substrate being disturbed, I'd recommend going with API Root Tabs instead, as they do not contain copper.

**Q: How I use this for my tank 20 gallons**
A: Per the instructions:
"On initial use or after a major (> 40%) water change, use 1 capful (5 mL) for every 40 L (10 US gallons). Thereafter use 1 capful for every 200 L (50 US gallons) daily or every other day. For smaller dosing please note that each cap thread is approximately 1 mL."
1 cap = 5ml
1 cap for every 50 gallon equates to 1 ml for every 10 gallons or 2 ml for 20 gallons.

**Q: Is the product compatible with freshwater invertebrates, like amano shrimp?**
A: I use this product on a regular basis and I have snails and shrimp in my tank.  No problems.

## Frequently Bought Together

- Seachem Flourish Excel Bioavailable Carbon - Organic Carbon Source for Aquatic Plants 100 ml
- Seachem Flourish Freshwater Plant Supplement - Aquarium Element and Nutrient Blend 250 ml
- Seachem Flourish Tabs Growth Supplement - Aquatic Plant Stimulant 10 ct

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-03-06*