---
product_id: 451975966
title: "Pool Rx Booster Black 20k-30k Gallons - 4 PK"
brand: "poolrx"
price: "€ 386.96"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.nl/products/451975966-pool-rx-booster-black-20k-30k-gallons-4-pk
store_origin: NL
region: Netherlands
---

# NSF/ANSI 50 Certified safety Supports 20k-30k gallons 6-month algaecide power Pool Rx Booster Black 20k-30k Gallons - 4 PK

**Brand:** poolrx
**Price:** € 386.96
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your pool flawless all season—because your swim squad deserves the best!

## Quick Answers

- **What is this?** Pool Rx Booster Black 20k-30k Gallons - 4 PK by poolrx
- **How much does it cost?** € 386.96 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/451975966-pool-rx-booster-black-20k-30k-gallons-4-pk)

## Best For

- poolrx enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Certification:** NSF/ANSI 50 certified for guaranteed safety and performance.
- • **Chemical Demand Reduction:** Minimizes the need for extra chemicals, saving you time and money.
- • **Massive Coverage Capacity:** Perfectly balances minerals for pools between 20,000 and 30,000 gallons.
- • **Long-lasting Algae Defense:** EPA registered formula keeps your pool crystal clear for up to 6 months.
- • **Universal Pool Compatibility:** Works seamlessly with chlorine, salt, UV, or ozone pool systems.

## Overview

PoolRx Booster Black is a certified 6-month algaecide mineral pack designed for pools holding 20,000 to 30,000 gallons. Compatible with all major pool sanitizers, it reduces chemical use while eliminating algae, ensuring crystal-clear water with minimal maintenance.

## Description

The PoolRx black booster is an EPA Registered, NSF/ANSI 50 Certified 6-month algaecide that's supports 20k - 30K gallons of pool water. The PoolRx Booster is used to replace PoolRx minerals contained in a PoolRx pool unit after 4-6 months of use. The PoolRx Booster is also used to increase the amount of minerals for pools larger than 20K gallon upon install of a new PoolRx pool unit. The PoolRx Booster minerals are the same minerals that are packed inside a PoolRx pool unit. Start with a new PoolRx unit at the beginning of each swim season. For year-round pool use, Add a PoolRx Booster #102066 after 6 months. PoolRx has been simplifying pool & spa care since 1994 & can support any size body of water & any type of pool. PoolRx is also ideal for salt pools use.

## Features

- Additional minerals for Pool RX pool unit
- Eliminates all types of Pool Algae
- Reduces chemical demand
- Effective for up to 6 Months
- Ideal for Chlorine, Salt, UV, or Ozone Pools
- NSF/ANSI 50 Certified

## Product Details

- **Brand:** poolrx
- **Item Weight:** 16 ounces
- **Item Form:** Tablet
- **Product Benefits:** Eliminates all types of Pool Algae
- **UPC:** 700553020646

## Images

![Pool Rx Booster Black 20k-30k Gallons - 4 PK - Image 1](https://m.media-amazon.com/images/I/61-f9SbUYoL.jpg)
![Pool Rx Booster Black 20k-30k Gallons - 4 PK - Image 2](https://m.media-amazon.com/images/I/519RQVWHvqL.jpg)
![Pool Rx Booster Black 20k-30k Gallons - 4 PK - Image 3](https://m.media-amazon.com/images/I/81snbh8PXuL.jpg)
![Pool Rx Booster Black 20k-30k Gallons - 4 PK - Image 4](https://m.media-amazon.com/images/I/71UlXEY8wtL.jpg)
![Pool Rx Booster Black 20k-30k Gallons - 4 PK - Image 5](https://m.media-amazon.com/images/I/81NgB2r7-UL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Supplemental to PoolRX ball
*by F***Y on July 5, 2024*

I have a 30k pool. I bought this in addition to the PoolRx ball. I have had a hard time keeping control of yellow algae. I've used many different (expensive) products without lasting results. I live in the Phoenix, AZ valley and the water gets up over 90 degrees farenheit in the summer. This has worked wonderfully. I will add a canister every three months and replace the ball after a year. I have not had any algae return since using the product.

### ⭐⭐⭐⭐⭐ THIS TEALLY WORKS & WIRTH EVERY PENNY
*by S***R on July 20, 2024*

For 18 years I battled yellow algae in my pool when the weather warmed up here in a Houston. One of my pool techs suggested this three years ago & the Pool Rx Black is gold. It kills all algae. However, if you backwash before the first 2 weeks, all is lost. So do follow the directions & you’ll be a happy cat. 😁

### ⭐⭐⭐ Arrived Clumpy
*by K***S on July 12, 2025*

PROS: Fast shipping, PriceCONS: Arrived clump; Looked as though moisture had soaked into the product, therefore I have to open container, hammer it out and place it in a different container.

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**Shop now:** [https://www.desertcart.nl/products/451975966-pool-rx-booster-black-20k-30k-gallons-4-pk](https://www.desertcart.nl/products/451975966-pool-rx-booster-black-20k-30k-gallons-4-pk)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-23*