---
product_id: 23007904
title: "Flourish Phosphorus, 4 L / 1 fl. gal."
brand: "seachem"
price: "£92.22"
currency: GBP
in_stock: true
url: https://www.desertcart.co.uk/products/23007904-flourish-phosphorus-4-l-1-fl-gal
store_origin: GB
region: United Kingdom
---

# optimized for planted aquariums 4500 mg/L potassium phosphate concentration precise, safe phosphate dosing Flourish Phosphorus, 4 L / 1 fl. gal.

**Brand:** seachem
**Price:** £92.22
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your aquascape with precision phosphorus power!

## Quick Answers

- **What is this?** Flourish Phosphorus, 4 L / 1 fl. gal. by seachem
- **How much does it cost?** £92.22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/23007904-flourish-phosphorus-4-l-1-fl-gal)

## 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

- • **Effortless Dosing:** Eliminates guesswork with a safe, pre-measured phosphate solution
- • **Aquascape Perfection:** Formulated specifically to enhance planted aquarium health and vitality
- • **Maximize Plant Potential:** Supports lush, thriving aquatic plants for a stunning underwater display
- • **Consistent Nutrient Boost:** Delivers a reliable 4500 mg/L potassium phosphate for vibrant plant growth
- • **Professional Grade Formula:** Trusted by aquarists for precise nutrient management

## Overview

Flourish Phosphorus is a 4-liter potassium phosphate supplement delivering 4500 mg/L phosphate concentration, designed to provide safe, accurate dosing for planted aquariums, ensuring optimal nutrient balance and vibrant aquatic plant growth.

## Description

Flourish Phosphorus, 4 L / 1 fl. gal.

## Features

- Phosphorus supplement for the planted aquarium
- A safe 4500 mg/L solution of potassium phosphate
- Takes the guesswork out of phosphate dosing

## Product Details

- **Brand:** Seachem
- **Liquid Volume:** 4 Liters
- **Item Weight:** 9.52 Pounds
- **Item Form:** Liquid
- **Target Species:** Fish

## Images

![Flourish Phosphorus, 4 L / 1 fl. gal. - Image 1](https://m.media-amazon.com/images/I/71TY-Q3d45L.jpg)

## Available Options

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

## Frequently Bought Together

- Flourish Phosphorus, 4 L / 1 fl. gal.
- Flourish Potassium, 4 L / 1 fl. gal.
- Flourish Nitrogen, 4 L / 1 fl. gal.

---

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**Shop now:** [https://www.desertcart.co.uk/products/23007904-flourish-phosphorus-4-l-1-fl-gal](https://www.desertcart.co.uk/products/23007904-flourish-phosphorus-4-l-1-fl-gal)

---

*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-13*