---
product_id: 48995707
title: "Seachem Flourish Potassium Supplement, 500 ml"
brand: "seachem"
price: "€ 55.67"
currency: EUR
in_stock: true
reviews_count: 13
category: "Seachem"
url: https://www.desertcart.es/products/48995707-seachem-flourish-potassium-supplement-500-ml
store_origin: ES
region: Spain
---

# Phosphate & nitrate free formula 50,000 mg/L potassium concentration Easy weekly dosing, 1 ml per 250 ml water Seachem Flourish Potassium Supplement, 500 ml

**Brand:** seachem
**Price:** € 55.67
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your aquarium’s green game with every drop!

## Quick Answers

- **What is this?** Seachem Flourish Potassium Supplement, 500 ml by seachem
- **How much does it cost?** € 55.67 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/48995707-seachem-flourish-potassium-supplement-500-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

- • **Compact & Convenient:** 500 ml bottle fits perfectly in your aquarium toolkit for ongoing plant vitality
- • **Effortless Weekly Care:** Simple 1 ml dose per 250 ml water ensures hassle-free maintenance
- • **Trusted by Aquascaping Pros:** Seachem’s proven quality with 4.7-star rating and thousands of happy users
- • **Power-Packed Potassium Boost:** Ultra-concentrated 50,000 mg/L formula fuels lush aquatic plant growth
- • **Clean & Safe for Your Ecosystem:** Zero phosphate and nitrate—keeps your aquarium balanced and shrimp-safe

## Overview

Seachem Flourish Potassium Supplement is a highly concentrated liquid fertilizer (50,000 mg/L) designed to provide essential potassium to planted aquariums. Free from phosphate and nitrate, it supports healthy plant growth without disrupting water chemistry. Easy to dose weekly at 1 ml per 250 ml of aquarium water, this 500 ml bottle is a trusted choice among aquascaping enthusiasts for maintaining vibrant, thriving aquatic plants.

## Description

Product Description Seachem Flourish Potassium 500Ml Directions Use 1 ml of Seachem Flourish Potassium per 250 ml (1 cup) of water. Dose weekly or as needed for aquatic plants. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Box Contains water treatment See more

Review: Aquatic plant must have. - One of the essential elements required by aquarium plants, I wouldn’t be without it. 👍
Review: good stuff - using for a while now, always trust seachem for shrimp safe items

## Features

- Potassium supplement for the planted aquarium
- Highly concentrated (50,000 mg/L)
- Does not contain phosphate or nitrate

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002APILO |
| Allergen Information | Yam Free |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 12,917 in Pet Supplies ( See Top 100 in Pet Supplies ) 149 in Aquarium Water Treatments |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,866) |
| Date First Available | 16 Aug. 2010 |
| External Testing Certification | Não aplicável |
| Item Form | Liquid |
| Item Weight | 265 g |
| Item model number | 463 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 19.3 x 3.81 x 3.81 cm; 265 g |
| Quantity | 1 |
| Size | 500 ml |
| Specific Uses | Active |
| Volume | 500 Millilitres |

## Product Details

- **Brand:** Seachem
- **Item form:** Liquid
- **Item weight:** 265 Grams
- **Liquid volume:** 500 Millilitres
- **Manufacturer:** Seachem

## Images

![Seachem Flourish Potassium Supplement, 500 ml - Image 1](https://m.media-amazon.com/images/I/51tnZl9nI-L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Aquatic plant must have.
*by J***D on 18 March 2025*

One of the essential elements required by aquarium plants, I wouldn’t be without it. 👍

### ⭐⭐⭐⭐⭐ good stuff
*by S***N on 28 September 2021*

using for a while now, always trust seachem for shrimp safe items

### ⭐⭐⭐⭐⭐ Good product
*by J***K on 7 August 2021*

Value for money

## 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.es/products/48995707-seachem-flourish-potassium-supplement-500-ml](https://www.desertcart.es/products/48995707-seachem-flourish-potassium-supplement-500-ml)

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-27*