---
product_id: 4156361
title: "Seachem Flourish Potassium 500 mL / 17 fl. oz."
brand: "seachem"
price: "£28.66"
currency: GBP
in_stock: true
category: "Seachem"
url: https://www.desertcart.co.uk/products/4156361-seachem-flourish-potassium-500-ml-17-fl-oz
store_origin: GB
region: United Kingdom
---

# Boosts vigorous aquatic plant growth 50,000 mg/L potassium concentration Zero phosphate & nitrate formula Seachem Flourish Potassium 500 mL / 17 fl. oz.

**Brand:** seachem
**Price:** £28.66
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your aquarium’s green game—because thriving plants don’t wait!

## Quick Answers

- **What is this?** Seachem Flourish Potassium 500 mL / 17 fl. oz. by seachem
- **How much does it cost?** £28.66 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/4156361-seachem-flourish-potassium-500-ml-17-fl-oz)

## 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

- • **Growth Guardian:** Prevents potassium depletion in fast-growing aquatic ecosystems, ensuring lush, vibrant plants.
- • **Trusted & Proven:** Highly rated with 4.8 stars from over 3,000 reviews—join thousands of aquascaping pros who rely on it.
- • **Potassium Powerhouse:** Delivers a potent 50,000 mg/L potassium boost to supercharge your planted aquarium’s growth.
- • **Pure & Clean Formula:** Contains no phosphate or nitrate, keeping your water chemistry balanced and fish-friendly.
- • **Seamless Integration:** Perfectly complements the entire Seachem Flourish line and Fluorite gravel for a holistic plant care routine.

## Overview

Seachem Flourish Potassium is a premium liquid supplement delivering 50,000 mg/L of potassium to support vigorous growth in freshwater planted aquariums. Free from phosphate and nitrate, it prevents nutrient depletion in fast-growing systems and integrates seamlessly with Seachem’s Flourish product line and Fluorite gravel. Trusted by thousands, it’s the essential boost for lush, healthy aquatic plants.

## Description

Sachem Flourish Potassium contains 50,000 mg/L of potassium suitable for the natural freshwater aquarium. Potassium is one of several elements that are vitally important to maintaining a vigorous level of growth in a planted aquarium. Potassium can become depleted in a rapidly growing system or when the source water has a low mineral content. In these cases potassium could become the limiting factor to growth. Use Flourish Potassium to prevent potassium depletion and maintain the highest level of growth. Flourish Potassium is an integral component of Sachem's plant products and is recommended for use with the entire Flourish line as well as our Fluorite gravel. Contains no phosphate or nitrate.

## Features

- Potassium supplement
- For planted aquariums
- Contains no phosphate or nitrate

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002APILO |
| ASIN  | B0002APILO |
| Allergen Information | Yam Free |
| Best Sellers Rank | #12,016 in Pet Supplies ( See Top 100 in Pet Supplies ) #89 in Aquarium Water Treatments |
| Brand Name | Seachem |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,096) |
| Date First Available  | October 2, 2001 |
| Department  | Unisex-Adult |
| Global Trade Identification Number | 00000116046305 |
| Included Components | Seachem Flourish Potassium 500ml |
| Item Form | Liquid |
| Item Type Name | Seachem Flourish Potassium 500ml |
| Item Weight | 265 g |
| Item model number  | 463 |
| Liquid Volume | 500 ml |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer  | Seachem Laboratories, Inc. |
| Manufacturer Part Number | 463 |
| Model Number | 463 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions  | 7.6 x 1.5 x 1.5 inches; 9.35 ounces |
| Target Species | Aquatic plants |
| UPC | 000116046305 |
| Unit Count | 1 Count |
| Warranty Description | Warranty |

## Product Details

- **Brand:** Seachem
- **Item Form:** Liquid
- **Item Weight:** 265 g
- **Liquid Volume:** 500 ml
- **Unit Count:** 1 Count

## Images

![Seachem Flourish Potassium 500 mL / 17 fl. oz. - Image 1](https://m.media-amazon.com/images/I/51tnZl9nI-L.jpg)

## Available Options

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

## Frequently Bought Together

- Seachem Flourish Potassium 500ml
- Seachem Flourish Freshwater Plant Supplement 500 ml
- Seachem Flourish Iron 500ml

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**Shop now:** [https://www.desertcart.co.uk/products/4156361-seachem-flourish-potassium-500-ml-17-fl-oz](https://www.desertcart.co.uk/products/4156361-seachem-flourish-potassium-500-ml-17-fl-oz)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-08-30*