---
product_id: 371975975
title: "Mineral Algaecide Unit, up to 6-Month Algae Control, for 100-400 gallons, Yellow & White, New Formula with Silver."
brand: "poolrx"
price: "€ 42.44"
currency: EUR
in_stock: true
reviews_count: 8
category: "Poolrx"
url: https://www.desertcart.sk/products/371975975-mineral-algaecide-unit-up-to-6-month-algae-control-100
store_origin: SK
region: Slovakia
---

# Up to 6 months algae control For 100-400 gallon spas 3 active mineral ingredients Mineral Algaecide Unit, up to 6-Month Algae Control, for 100-400 gallons, Yellow & White, New Formula with Silver.

**Brand:** poolrx
**Price:** € 42.44
**Availability:** ✅ In Stock

## Summary

> 💦 Elevate your spa game with 6 months of effortless clarity!

## Quick Answers

- **What is this?** Mineral Algaecide Unit, up to 6-Month Algae Control, for 100-400 gallons, Yellow & White, New Formula with Silver. by poolrx
- **How much does it cost?** € 42.44 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/371975975-mineral-algaecide-unit-up-to-6-month-algae-control-100)

## 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

- • **Certified Spa Safety:** EPA Registered & NSF/ANSI 50 Certified for trusted quality
- • **Triple Mineral Power:** Copper, Zinc & Silver combine for unbeatable algae defense
- • **Long-Lasting Protection:** Enjoy crystal-clear spa water for up to 6 months without hassle
- • **Universal Compatibility:** Works seamlessly with Chlorine, Salt, UV, or Ozone systems
- • **Chemical Demand Reduction:** Less chlorine needed means gentler water on your skin

## Overview

PoolRx+ Mineral Algaecide Unit uses a powerful new formula with copper sulfate, zinc sulfate, and silver nitrate to eliminate all types of spa algae. Designed for spas holding 100-400 gallons, it offers up to 6 months of effective algae control while reducing chemical demand. EPA Registered and NSF/ANSI 50 Certified, PoolRx+ ensures safer, cleaner water compatible with all major sanitizing systems, making spa maintenance simpler and your soak more enjoyable.

## Description

Pool Rx+, the advanced algaecide formula from the trusted Pool Rx brand. Pool Rx+ harnesses the power of three active ingredients: Copper Sulfate, Zinc Sulfate, and Silver Nitrate, providing enhanced protection for your spa water. The yellow Pool Rx+ spa unit is EPA Registered and NSF/ANSI 50 Certified, making it a reliable choice for spas holding 100 to 400 gallons of water. With Pool Rx+, you can enjoy reduced chemical demand, improved water quality, and simplified spa maintenance for up to 6 months. Re-treatment intervals may vary depending on factors like bather load and splash out. For optimal results, replace the Pool Rx+ spa/hot tub unit every time you drain and refill your spa/hot tub, or if you notice the first signs of algae or dull-looking water, even if your chlorine levels are within the 0.5-1.0 ppm range.Pool Rx+ products are versatile and can support any size spa, whether you use Chlorine, Salt, UV, or Ozone sanitizing systems. Upgrade to Pool Rx+ and experience a cleaner, easier-to-maintain spa all season long.

Review: amazing just like the ones for our pool - We switched from bromine to Chlorine after using one in our pool was such a impressive change. My skin feels so much better than when i got in the spa with bromine it really helps keep our spa cleaner, and the water FEELS cleaner
Review: Great product - Working great in a large fountain!!

## Features

- New formula with 3 active Ingredients
- Eliminates all types of Spa Algae
- Reduces chemical demand
- Effective for up to 6 Months
- NSF/ANSI 50 Certified

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09FWVY2SP |
| Best Sellers Rank | #22,871 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #20 in Swimming Pool Algaecides |
| Brand | poolrx |
| Customer Reviews | 4.4 4.4 out of 5 stars (388) |
| Item Form | Tablet |
| Item Weight | 1.44 ounces |
| Item model number | 331057 |
| Manufacturer | Pool Rx |
| Number of Items | 1 |
| Product Benefits | Eliminates and Controls Algae |
| Product Dimensions | 2 x 2 x 2.25 inches |
| UPC | 700553310570 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** poolrx
- **Item Form:** Tablet
- **Item Weight:** 1.44 ounces
- **Product Benefits:** Eliminates and Controls Algae
- **UPC:** 700553310570

## Images

![Mineral Algaecide Unit, up to 6-Month Algae Control, for 100-400 gallons, Yellow & White, New Formula with Silver. - Image 1](https://m.media-amazon.com/images/I/51905Z8qQcL.jpg)

## Available Options

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

## Questions & Answers

**Q: I have a Saluspa inflatable hot tub. Can I just put it in a floating chlorine dispenser? it won't fit in the folds of the filter.**
A: I’m not sure how it would work in a floating dispenser, but I was able to squeeze it between the pleats and carefully put filter back in the case. It does distort the filter somewhat, but everything still works just fine. This definitely improved the water.

**Q: Do you recommend using shock treatment in addition to this product**
A: I would not use again. The cage broke apart in the skimmer basket and left small plastic and debris in the hot tub.

**Q: I use bromine, not chlorine, in my spa. Does it make a difference?**
A: I use bromine. No problem

**Q: Would it be crazy to put this in my intel fast set swimming pool? The one with the inflatable ring around the top. It’s about ten feet across/2ft deep**
A: Hi,
I used it for a kiddie pool and it prevented algae from forming...

## Customer Reviews

### ⭐⭐⭐⭐⭐ amazing just like the ones for our pool
*by S***D on December 7, 2025*

We switched from bromine to Chlorine after using one in our pool was such a impressive change. My skin feels so much better than when i got in the spa with bromine it really helps keep our spa cleaner, and the water FEELS cleaner

### ⭐⭐⭐⭐⭐ Great product
*by J***. on November 20, 2025*

Working great in a large fountain!!

### ⭐⭐⭐⭐⭐ Worked great!
*by S***N on October 6, 2025*

Really helped with chemical balance. The only thing I had to add all summer was salt occasionally and chlorine shock.

## Frequently Bought Together

- PoolRX+ spa Unit 100-400 gallons Unit
- PoolRX+ pool unit 7.5k-20k gallons
- PoolRX+ Pool Unit 20k-30k gallons

---

## 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.sk/products/371975975-mineral-algaecide-unit-up-to-6-month-algae-control-100](https://www.desertcart.sk/products/371975975-mineral-algaecide-unit-up-to-6-month-algae-control-100)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-19*