---
product_id: 51247232
title: "Flourish Potassium Supplement, 250 ml"
brand: "seachem"
price: "$U2370"
currency: UYU
in_stock: true
reviews_count: 13
category: "Seachem"
url: https://www.desertcart.uy/products/51247232-flourish-potassium-supplement-250-ml
store_origin: UY
region: Uruguay
---

# Essential nutrient for vibrant aquatic plants Highly concentrated 50,000 mg/L potassium No phosphate or nitrate – pure plant boost Flourish Potassium Supplement, 250 ml

**Brand:** seachem
**Price:** $U2370
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your aquarium’s green game with pure potassium power!

## Quick Answers

- **What is this?** Flourish Potassium Supplement, 250 ml by seachem
- **How much does it cost?** $U2370 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/51247232-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:** Free from phosphates and nitrates, promoting clean water and preventing algae blooms for a pristine aquarium.
- • **Compact & Convenient:** 250 mL bottle fits perfectly on your shelf, delivering long-lasting potassium support with minimal fuss.
- • **Combat Deficiency Symptoms:** Targets yellowing, browning, and weak stems—revitalize your plants’ health and aesthetics effortlessly.
- • **Trusted by Aquatic Enthusiasts:** Backed by a 4.7-star rating and shrimp-safe certification, it’s the go-to supplement for serious hobbyists.
- • **Precision Dosing for Optimal Growth:** Add 5 mL per 125 L to elevate potassium by 2 mg/L, ensuring lush, healthy plants without guesswork.

## Overview

Seachem Flourish Potassium Supplement is a highly concentrated liquid formula (50,000 mg/L) designed to supply essential potassium to planted aquariums. Free from phosphates and nitrates, it prevents common deficiency symptoms like chlorosis and necrosis, supporting vibrant, healthy aquatic plants. Trusted by hobbyists for its efficacy and shrimp-safe profile, this 250 mL supplement ensures precise dosing and long-term plant vitality.

## Description

Product Description Seachem Flourish Potassium 250Ml Directions Use 1 capful (5 mL) for every 125 L (30 US gallons). This dose raises potassium by 2 mg/L. Repeat 2–3 times per week or as needed in response to signs of potassium deficiency in older leaves which include: chlorosis (yellowing), necrosis (death/browning), pinholes in leaves, and weak stems and roots. 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

- Contains sensitizing substances. May produce an allergic reaction.
- Potassium supplement for the planted aquarium
- Highly concentrated (50,000 mg/L)
- Does not contain phosphate or nitrate

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002A5WRY |
| Allergen Information | Yam Free |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 13,915 in Pet Supplies ( See Top 100 in Pet Supplies ) 168 in Aquarium Water Treatments |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,857) |
| Date First Available | 23 Mar. 2010 |
| External Testing Certification | Não aplicável |
| Item Form | Liquid |
| Item Weight | 249 g |
| Item model number | 466 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions | 12.45 x 6.1 x 5.59 cm; 249.48 g |
| Quantity | 1 |
| Size | 250 ml |
| Volume | 250 Millilitres |

## Product Details

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

## Images

![Flourish Potassium Supplement, 250 ml - Image 1](https://m.media-amazon.com/images/I/51mOdi91cQL.jpg)

## Questions & Answers

**Q: How much do i use of this 160 litres fish tank**
A: it depends on how much you need to raise potassium levels by in your tank, 6-7ml should raise a 160 litre tank by 2mg per litre, personally i use 25 ml on water change day to push to my preferred mg/l then dose accordingly through the week, the more live plants you have the more you would require but each tank has there own requirements, if you dose things such as standard flourish etc then your already dosing potassium in small amounts

**Q: Can you use this brand on house/ outdoor plants.**
A: I think it would be to concentrated the recommendation is 5ml to 200L

## 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 250ml
- Seachem Flourish Nitrogen 250ml

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-03-14*