---
product_id: 17811476
title: "sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits"
brand: "sera"
price: "€ 39.41"
currency: EUR
in_stock: false
reviews_count: 9
url: https://www.desertcart.de/products/17811476-sera-phosphate-test-po4-15-ml-0-5-fl-oz
store_origin: DE
region: Germany
---

# fresh & marine compatible 60 tests per kit highly accurate readings sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits

**Brand:** sera
**Price:** € 39.41
**Availability:** ❌ Out of Stock

## Summary

> 💧 Keep your aquatic ecosystem thriving—test smarter, not harder!

## Quick Answers

- **What is this?** sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits by sera
- **How much does it cost?** € 39.41 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/17811476-sera-phosphate-test-po4-15-ml-0-5-fl-oz)

## Best For

- sera enthusiasts

## Why This Product

- Trusted sera brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Long-Lasting Supply:** Up to 60 easy-to-read tests per compact 15 ml bottle.
- • **Quick & Clear Results:** Instantly assess phosphate levels with no guesswork.
- • **Proactive Algae Control:** Identify excess nutrients early to maintain crystal-clear water.
- • **Precision Phosphate Monitoring:** Stay ahead of algae growth with lab-grade accuracy.
- • **Universal Aquarium Compatibility:** Perfect for freshwater, marine tanks, and ponds alike.

## Overview

The sera Phosphate-Test (PO4) 15 ml kit offers precise, easy-to-read phosphate level measurements for freshwater, marine aquariums, and ponds. With enough reagents for approximately 60 tests, it empowers aquarium enthusiasts to prevent algae overgrowth by monitoring nutrient levels effectively, ensuring a healthy aquatic environment.

## Description

Both fish waste and feeding are possible causes for phosphate introduction into the water. A part is taken up as a nutrient by plants, an excess, however, provides nutrition for unwanted algae. The sera PO4-Test quickly and easily provides an overview of current phosphate levels. Excess phosphate is easy to remove with sera phosvec･clear (freshwater) or sera phosvec Granulate (fresh and marine water) or sera pond phosvec (pond). Sufficient for approx. 60 measurements.

Review: easy reading - nice test
Review: Good test kit - As advertised

## Features

- For freshwater and marine aquariums as well as ponds
- Very accurate
- Easy to read

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0013ZGII4 |
| ASIN  | B0013ZGII4 |
| Best Sellers Rank | #250,951 in Pet Supplies ( See Top 100 in Pet Supplies ) #368 in Aquarium Test Kits |
| Brand Name | Sera |
| Customer Reviews | 4.3 4.3 out of 5 stars (468) |
| Date First Available | September 1, 2009 |
| Date First Available  | September 1, 2009 |
| Directions | Sera PO 4 Test quickly and easily provides an overview of current phosphate levels. |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions LxWxH | 1.57 x 3.54 x 5.51 inches |
| Item Package Dimensions L x W x H | 5.28 x 3.54 x 1.77 inches |
| Item Weight | 0.21 Pounds |
| Item model number | 4930 |
| Item model number  | 4930 |
| Manufacturer | Sera North America, Inc. |
| Manufacturer  | Sera North America, Inc. |
| Number of Items | 1 |
| Product Dimensions  | 1.57 x 3.54 x 5.51 inches; 3.36 ounces |
| Target Audience Keyword | fish |

## Product Details

- **Brand:** Sera
- **Item Form:** Liquid
- **Item Weight:** 0.21 Pounds
- **Liquid Volume:** 30 Milliliters
- **Manufacturer:** Sera North America, Inc.

## Images

![sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits - Image 1](https://m.media-amazon.com/images/I/31IyPgdc2xL.jpg)
![sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits - Image 2](https://m.media-amazon.com/images/I/41SFuG96GqL.jpg)
![sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits - Image 3](https://m.media-amazon.com/images/I/41V6rg13CXL.jpg)
![sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits - Image 4](https://m.media-amazon.com/images/I/41wAS3WJH-L.jpg)
![sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits - Image 5](https://m.media-amazon.com/images/I/71CqPwibzsL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ easy reading
*by P***. on January 7, 2026*

nice test

### ⭐⭐⭐⭐⭐ Good test kit
*by M***T on March 8, 2025*

As advertised

### ⭐⭐⭐ Not great
*by D***R on October 3, 2025*

The test is not great.

## Frequently Bought Together

- sera Phosphate-Test (PO4) 15 ml, 0.5 fl.oz. Aquarium Test Kits
- sera Nitrate-Test (No3) 15 Ml, 0.5 fl.oz Aquarium Test Kits
- sera kH-Test 15 ml, 0.5 fl.oz. Aquarium Test Kits

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-04-22*