---
product_id: 256598941
title: "Seachem Flourish Potassium Supplement, 250 ml"
brand: "seachem"
price: "$50.90"
currency: USD
in_stock: true
reviews_count: 7
category: "Seachem"
url: https://www.desertcart.ec/products/256598941-seachem-flourish-potassium-supplement-250-ml
store_origin: EC
region: Ecuador
---

# Optimizes Plant Growth & Vigor 50,000 mg/L Potassium Concentration Potassium Sulfate Formula - No NPK Imbalance Seachem Flourish Potassium Supplement, 250 ml

**Brand:** seachem
**Price:** $50.90
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock Your Aquarium’s Full Growth Potential with Precision Potassium!

## Quick Answers

- **What is this?** Seachem Flourish Potassium Supplement, 250 ml by seachem
- **How much does it cost?** $50.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/256598941-seachem-flourish-potassium-supplement-250-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

- • **Pure & Safe Formula:** BPA-free liquid supplement designed for all life stages in natural planted aquariums.
- • **Compact & Convenient:** 250 ml bottle size fits perfectly in your aquarium care kit for easy, consistent dosing.
- • **Vibrant Growth Guarantee:** Prevents potassium depletion that causes yellowing leaves, ensuring lush, healthy aquatic plants.
- • **Precision Potassium Boost:** Target potassium levels without altering nitrogen or phosphorus for perfectly balanced plant nutrition.
- • **Trusted by Aquascaping Pros:** Highly rated with 4.7 stars and a top 50 rank in Aquarium Water Quality Treatment.

## Overview

Seachem Flourish Potassium Supplement delivers a potent 50,000 mg/L potassium boost derived from potassium sulfate, allowing aquarists to enhance plant growth without disrupting nitrogen or phosphorus levels. This 250 ml BPA-free liquid formula prevents potassium depletion—commonly indicated by yellowing older leaves—ensuring vibrant, healthy aquatic plants in natural planted aquariums. Trusted by professionals and hobbyists alike, it’s a must-have for maintaining optimal aquarium plant vitality.

## 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. Sizes: 50 Ml, 100 Ml, 250 Ml, 500 Ml, 2 L, 4 L.

Review: Good price - Good product at a great price
Review: عند وصول المنتج كانت درجة حرارته مرتفه بسبب سوء التخزين ،السوال الن تضر الحراره بكفائة المنتج

## Features

- 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.
- Volume : 250 ml
- Details : Flourish Potassium contains 50,000 mg/L of potassium suitable for the natural planted aquarium

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002A5WRY |
| Allergen Information | BPA-Free |
| Batteries Included | No |
| Best Sellers Rank | #8,635 in Pet Supplies ( See Top 100 in Pet Supplies ) #50 in Aquarium Water Quality Testing & Treatment |
| Color | standard |
| Customer Reviews | 4.7 4.7 out of 5 stars (661) |
| Date First Available | 7 August 2012 |
| External Testing Certification | Não aplicável |
| Item Form | Liquid |
| Item Weight | 249 g |
| Item model number | 466 |
| Pet Life Stage | All Life Stages |
| Product Dimensions | 12.45 x 6.1 x 5.59 cm; 249.48 g |
| Quantity | 1 |
| Size | __NO_VALUE__ |
| Specific Uses | Active |
| Volume | 250 Milliliters |
| batteries required | No |

## Product Details

- **Brand:** Seachem
- **Item form:** Liquid
- **Item weight:** 0.55 Pounds
- **Liquid volume:** 250 Milliliters
- **Manufacturer:** Seachem

## Images

![Seachem Flourish Potassium Supplement, 250 ml - Image 1](https://m.media-amazon.com/images/I/51R0e6x0CsL.jpg)
![Seachem Flourish Potassium Supplement, 250 ml - Image 2](https://m.media-amazon.com/images/I/81JkKSPAbQL.jpg)
![Seachem Flourish Potassium Supplement, 250 ml - Image 3](https://m.media-amazon.com/images/I/81nSJJGQBvL.jpg)
![Seachem Flourish Potassium Supplement, 250 ml - Image 4](https://m.media-amazon.com/images/I/81NCTO6Jb2L.jpg)
![Seachem Flourish Potassium Supplement, 250 ml - Image 5](https://m.media-amazon.com/images/I/91Y8CWEmmuL.jpg)

## Questions & Answers

**Q: Is this safe for bettas?**
A: Yes! At the moment, my lonely Betta has been living in a heavily planted 40 gallon tank with some trumpet snails. I have been using only seachem products and they have not  not affected him  nor the snails, negatively. However use caution when dosing - follow directions. 
If tank isn’t heavily planted I would half the doses...

**Q: Can I use flourish potassium on hibiscus plants?**
A: Would work on any plants I would think.

**Q: How many ml do i use for a 72 gal and a 75 gal tank?**
A: 10 ml per 60 gal. 2 - 3 times a week per the instructions.

**Q: Will it work on watermelons**
A: This product is intended for aquarium use. I suppose it would work in a garden scenario, but is expensive by comparison to garden fertilizers (which are great for plants, but generally kill fish if you put them in an aquarium).

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good price
*by M***H on 15 August 2025*

Good product at a great price

### ⭐ Review
*by ع***د on 15 June 2021*

عند وصول المنتج كانت درجة حرارته مرتفه بسبب سوء التخزين ،السوال الن تضر الحراره بكفائة المنتج

### ⭐⭐⭐⭐⭐ Review
*by T***L on 3 September 2024*

J'avais remarqué un manque de potassium dans mon eau maintenant que je l'ai mis mes plantes sont magnifiques je recommande ce produit !!

## Frequently Bought Together

- Seachem Flourish Potassium 250ml
- Seachem Flourish Nitrogen 250ml

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-02-16*