---
product_id: 5951852
title: "Seachem Flourish Potassium 250 mL / 8.5 fl. oz."
brand: "seachem"
price: "₨271"
currency: SCR
in_stock: true
category: "Seachem"
url: https://www.desertcart.sc/products/5951852-seachem-flourish-potassium-250-ml-8-5-fl-oz
store_origin: SC
region: Seychelles
---

# Phosphate & nitrate free formula 50,000 mg/L potassium concentration 250 mL liquid volume Seachem Flourish Potassium 250 mL / 8.5 fl. oz.

**Brand:** seachem
**Price:** ₨271
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Seachem Flourish Potassium 250 mL / 8.5 fl. oz. by seachem
- **How much does it cost?** ₨271 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/5951852-seachem-flourish-potassium-250-ml-8-5-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

- • **Clean & Pure:** Zero phosphate or nitrate to keep your aquarium balanced and algae-free.
- • **Trusted by Experts:** Top-rated with 4.8 stars from over 3,000 aquarium enthusiasts.
- • **Seamless Integration:** Perfectly complements the entire Seachem Flourish line and Fluorite gravel.
- • **Essential Mineral Recharge:** Prevents potassium depletion in fast-growing planted tanks.
- • **Boost Plant Growth Naturally:** High-potassium formula fuels lush, vibrant aquatic plants.

## Overview

Seachem Flourish Potassium is a premium 250 mL liquid supplement delivering 50,000 mg/L potassium to support vigorous growth in freshwater planted aquariums. Free from phosphate and nitrate, it prevents nutrient depletion without promoting algae, making it an essential addition to any thriving aquatic ecosystem. Ideal for use alongside the full Flourish product range and Fluorite gravel, it’s a trusted choice for aquarists seeking lush, healthy plants.

## Description

Sachem Flourish Potassium contains 50,000 mg/L of potassium suitable for the natural freshwater 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 and maintain the highest level of growth. Flourish Potassium is an integral component of Sachem's plant products and is recommended for use with the entire Flourish line as well as our Fluorite gravel. Contains no phosphate or nitrate.

## Features

- Potassium supplement
- For planted aquariums
- Contains no phosphate or nitrate

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002A5WRY |
| ASIN  | B0002A5WRY |
| Allergen Information | Yam Free |
| Best Sellers Rank | #13,104 in Pet Supplies ( See Top 100 in Pet Supplies ) #99 in Aquarium Water Treatments |
| Brand Name | Seachem |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,099) |
| Date First Available  | October 2, 2001 |
| Department  | Unisex-Adult |
| Global Trade Identification Number | 00000116046602 |
| Included Components | Seachem Flourish Potassium 250ml |
| Item Form | Liquid |
| Item Type Name | Seachem Flourish Potassium 250ml |
| Item Weight | 8.8 ounces |
| Item model number  | 466 |
| Liquid Volume | 250 ml |
| Manufacturer | Seachem Laboratories, Inc. |
| Manufacturer  | Seachem Laboratories, Inc. |
| Manufacturer Part Number | 466 |
| Model Number | 466 |
| Number of Items | 1 |
| Pet Type | Fish |
| Product Dimensions  | 4.9 x 2.4 x 2.2 inches; 8.8 ounces |
| Target Species | Fish |
| UPC | 015568977138 000116046602 |
| Unit Count | 1 Count |
| Warranty Description | Warranty |

## Product Details

- **Brand:** Seachem
- **Item Form:** Liquid
- **Item Weight:** 8.8 ounces
- **Liquid Volume:** 250 ml
- **Unit Count:** 1 Count

## Images

![Seachem Flourish Potassium 250 mL / 8.5 fl. oz. - Image 1](https://m.media-amazon.com/images/I/51mOdi91cQL.jpg)

## Available Options

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

## 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).

## Frequently Bought Together

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

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*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-08-27*