---
product_id: 318640707
title: "Seachem Flourish Phosphorus 500ml"
brand: "seachem"
price: "€ 44.70"
currency: EUR
in_stock: true
reviews_count: 5
category: "Seachem"
url: https://www.desertcart.fi/products/318640707-seachem-flourish-phosphorus-500ml
store_origin: FI
region: Finland
---

# optimized for planted aquariums 4500 mg/L potassium phosphate precise phosphate dosing Seachem Flourish Phosphorus 500ml

**Brand:** seachem
**Price:** € 44.70
**Availability:** ✅ In Stock

## Summary

> 🌿 Elevate your planted tank game with precision phosphorus dosing!

## Quick Answers

- **What is this?** Seachem Flourish Phosphorus 500ml by seachem
- **How much does it cost?** € 44.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/318640707-seachem-flourish-phosphorus-500ml)

## 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:** Say goodbye to guesswork with a perfectly balanced liquid formula.
- • **Pure Phosphorus Power:** Boost your aquatic plants with a potent 4500 mg/L potassium phosphate solution.
- • **Compact & Concentrated:** 500ml bottle packs a punch without cluttering your tank space.
- • **Trusted by Enthusiasts:** Join thousands of aquarists who rate it 4.6 stars for consistent results.
- • **Universal Compatibility:** Safe and effective for all life stages in your planted aquarium ecosystem.

## Overview

Seachem Flourish Phosphorus 500ml is a concentrated liquid potassium phosphate supplement delivering 4500 mg/L phosphorus, designed to optimize growth in planted aquariums. It simplifies phosphate dosing with a safe, easy-to-use formula suitable for all aquatic life stages, trusted by hobbyists worldwide.

## Description

Seachem Flourish Phosphorus 500ml

Review: My tank had no phosphate, pour this in, and bam! Phosphate! I was astonished at the pure sorcery contained within this bottle!
Review: Qualitativ hochwertiges Produkt

## Features

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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0002APIJQ |
| Allergen Information | Abalone Free |
| Batteries Included | No |
| Best Sellers Rank | #41,928 in Pet Supplies ( See Top 100 in Pet Supplies ) #362 in Fish Medication & Health Supplies |
| Customer Reviews | 4.6 4.6 out of 5 stars (767) |
| Date First Available | 7 August 2012 |
| External Testing Certification | Não aplicável |
| Item Form | Liquid |
| Item Weight | 522 g |
| Item model number | 193 |
| Number of Items | 1 |
| Pet Life Stage | All Life Stages |
| Product Dimensions | 19.3 x 5.59 x 3.56 cm; 521.63 g |
| Quantity | 1 |
| Size | 100 mL, 250 mL, 500 mL, 2 L, 4 L |
| Volume | 500 Milliliters |
| batteries required | No |

## Product Details

- **Brand:** Seachem
- **Item form:** Liquid
- **Item weight:** 522 g
- **Liquid volume:** 500 Milliliters
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Seachem Flourish Phosphorus 500ml - Image 1](https://m.media-amazon.com/images/I/517Gt4xFYSS.jpg)

## Questions & Answers

**Q: My tap water already has phosphate in it. Is there any need for this also?**
A: Yeah ,I guess so. If you have enough  phosphate, your plants are growing & there are no algae blooms that should be good, I try to keep my levels at 1.0 mg/l. This product is also nitrite free ,I think it's wise to take something like that into consideration. I hope this helps you out.

**Q: Can you please advise how much you dose per week in your planted tank?**
A: No, this is for freshwater plants.

**Q: Can this be used house plants?**
A: It can but it will need to be diluted as it's in a concentrated form. I'd try 1ml per gallon and see the result. If the plant tips appear to be burnt, I'd do half a ml. If it seems fine, try increasing to 1.5ml/g. Hope this helps.

**Q: Can this product be used in a saltwater tank for the plants**
A: Yes it can however brightwell makes a macro nutrient designed just for reef plants like chaeto, algae, and sea grass.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by F***E on 25 May 2024*

My tank had no phosphate, pour this in, and bam! Phosphate! I was astonished at the pure sorcery contained within this bottle!

### ⭐⭐⭐⭐⭐ Review
*by R***U on 6 October 2023*

Qualitativ hochwertiges Produkt

### ⭐⭐⭐⭐⭐ Review
*by M***S on 6 January 2025*

Works well for me when adding it to my Green Smoothie in the mornings as i get an extra boost for the day. Highly recommend this for fish tanks too as it tastes great and would be amazing for plants. My plants are also enjoying the benefits from this product too! Disclaimer: this is not medical advice, seek medical advice before following the instructions and add at your own risk. I am not a health professional.

## Frequently Bought Together

- Seachem Flourish Phosphorus 500ml
- Seachem Flourish Potassium 500ml
- Seachem Flourish Nitrogen 500ml

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.fi/products/318640707-seachem-flourish-phosphorus-500ml](https://www.desertcart.fi/products/318640707-seachem-flourish-phosphorus-500ml)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-27*