---
product_id: 56147493
title: "Flourish Potassium, 50 mL / 1.7 fl. oz."
brand: "seachem"
price: "€ 21.64"
currency: EUR
in_stock: true
url: https://www.desertcart.it/products/56147493-flourish-potassium-50-ml-1-7-fl-oz
store_origin: IT
region: Italy
---

# Phosphate & nitrate free formula 50,000 mg/L potassium concentration Precise potassium dosing without N or P Flourish Potassium, 50 mL / 1.7 fl. oz.

**Brand:** seachem
**Price:** € 21.64
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock vibrant growth with precision potassium power!

## Quick Answers

- **What is this?** Flourish Potassium, 50 mL / 1.7 fl. oz. by seachem
- **How much does it cost?** € 21.64 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/56147493-flourish-potassium-50-ml-1-7-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

- • **Maximize Plant Growth:** Ultra-concentrated potassium to fuel lush aquatic greenery
- • **Pure & Targeted Nutrition:** No phosphate or nitrate—control your aquarium’s NPK balance precisely
- • **Combat Nutrient Deficiency:** Prevents yellowing leaves by replenishing potassium fast
- • **Optimized for Rapid Growth:** Ideal for high-demand planted tanks and low-mineral water sources
- • **Synergize with Flourish Line:** Perfectly complements Flourish Nitrogen and Phosphorus for balanced growth

## Overview

Flourish Potassium is a highly concentrated (50,000 mg/L) potassium supplement designed specifically for planted aquariums. It replenishes potassium without adding phosphate or nitrate, allowing precise nutrient management and preventing potassium deficiency symptoms like yellowing leaves. Perfect for rapidly growing aquatic plants and low-mineral water, it works seamlessly with Flourish Nitrogen and Phosphorus to maintain optimal plant health.

## Description

Flourish Potassium™ contains 50,000 mg/L of potassium suitable for the natural planted 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 (signs of which include yellowing in older leaves) and maintain the highest level of growth. The most easily obtained sources of potassium are potassium nitrate and potassium phosphate. Both of these sources add to either nitrogen or phosphorus as well as potassium, making it virtually impossible to target a specific NPK ratio. Flourish Potassium™ is derived from potassium sulfate, allowing the user to adjust potassium levels without affecting nitrogen or phosphorus.

## Features

- Potassium supplement for the planted aquarium
- Highly concentrated (50,000 mg/L)
- Does not contain phosphate or nitrate making it ideal for use with Flourish Nitrogen and Flourish Phosphorus

## Product Details

- **Brand:** Seachem
- **Liquid Volume:** 50 Milliliters
- **Item Weight:** 2.72 ounces
- **Item Form:** Liquid
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Flourish Potassium, 50 mL / 1.7 fl. oz. - Image 1](https://m.media-amazon.com/images/I/51H+kGOCL0L.jpg)
![Flourish Potassium, 50 mL / 1.7 fl. oz. - Image 2](https://m.media-amazon.com/images/I/81MSPCqZYzL.jpg)
![Flourish Potassium, 50 mL / 1.7 fl. oz. - Image 3](https://m.media-amazon.com/images/I/91w6wi5yS0L.jpg)
![Flourish Potassium, 50 mL / 1.7 fl. oz. - Image 4](https://m.media-amazon.com/images/I/213CawSphuL.jpg)

## Available Options

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

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**Shop now:** [https://www.desertcart.it/products/56147493-flourish-potassium-50-ml-1-7-fl-oz](https://www.desertcart.it/products/56147493-flourish-potassium-50-ml-1-7-fl-oz)

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-02-22*