---
product_id: 48995707
title: "Seachem Flourish Potassium Supplement, 500 ml"
brand: "seachem"
price: "€ 49.55"
currency: EUR
in_stock: true
reviews_count: 13
category: "Seachem"
url: https://www.desertcart.pt/products/48995707-seachem-flourish-potassium-supplement-500-ml
store_origin: PT
region: Portugal
---

# Essential potassium boost for plants 50,000 mg/L ultra-concentrated Zero phosphate & nitrate formula Seachem Flourish Potassium Supplement, 500 ml

**Brand:** seachem
**Price:** € 49.55
**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?** € 49.55 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/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

- • **Easy Weekly Dosing:** Just 1 ml per 250 ml water ensures hassle-free, precise supplementation.
- • **Compact & Convenient:** 500 ml bottle fits seamlessly into your maintenance routine without clutter.
- • **Pure Plant Nutrition:** Formulated without phosphate or nitrate to keep your aquarium balanced and algae-free.
- • **Trusted by Aquascapers:** Highly rated and shrimp-safe, perfect for professional and hobbyist planted tanks alike.
- • **Power-Packed Concentration:** Delivers a potent 50,000 mg/L potassium dose for thriving aquatic plants.

## Overview

Seachem Flourish Potassium Supplement is a highly concentrated (50,000 mg/L) liquid formula designed to provide essential potassium to planted aquariums. Free from phosphate and nitrate, it supports healthy plant growth without promoting algae. Ideal for weekly dosing, this 500 ml supplement is trusted by aquascaping professionals and hobbyists for maintaining vibrant, lush 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 | 12,333 in Pet Supplies ( See Top 100 in Pet Supplies ) 146 in Aquarium Water Treatments |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,860) |
| Date First Available | 16 Aug. 2010 |
| External Testing Certification | Não aplicável |
| Item Form | Liquid |
| Item Weight | 599 g |
| Item model number | 463 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 19.3 x 3.81 x 3.81 cm; 599 g |
| Quantity | 1 |
| Size | 500 ml |
| Specific Uses | Active |
| Volume | 500 Millilitres |

## Product Details

- **Brand:** Seachem
- **Item form:** Liquid
- **Item weight:** 0.6 Kilograms
- **Liquid volume:** 500 Millilitres
- **Manufacturer:** Seachem

## Images

![Seachem Flourish Potassium Supplement, 500 ml - Image 1](https://m.media-amazon.com/images/I/31i-cXEFd3L.jpg)
![Seachem Flourish Potassium Supplement, 500 ml - Image 2](https://m.media-amazon.com/images/I/51tnZl9nI-L.jpg)
![Seachem Flourish Potassium Supplement, 500 ml - Image 3](https://m.media-amazon.com/images/I/51vdunuLKHL.jpg)
![Seachem Flourish Potassium Supplement, 500 ml - Image 4](https://m.media-amazon.com/images/I/81J8JShPWhL.jpg)
![Seachem Flourish Potassium Supplement, 500 ml - Image 5](https://m.media-amazon.com/images/I/81MSPCqZYzL.jpg)

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

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-01-23*