---
product_id: 15511536
title: "Pool Unit #101066 6 Month Algaecide Treats 20k-30k gallons, Black"
brand: "poolrx"
price: "€ 138.03"
currency: EUR
in_stock: true
reviews_count: 8
category: "Poolrx"
url: https://www.desertcart.sk/products/15511536-pool-unit-101066-6-month-algaecide-treats-20k-30k-gallons
store_origin: SK
region: Slovakia
---

# 6-month algae protection Treats 20k-30k gallons Reduces chemical use Pool Unit #101066 6 Month Algaecide Treats 20k-30k gallons, Black

**Brand:** poolrx
**Price:** € 138.03
**Availability:** ✅ In Stock

## Summary

> 💦 Dive into crystal-clear confidence with PoolRx—your pool’s new best friend!

## Quick Answers

- **What is this?** Pool Unit #101066 6 Month Algaecide Treats 20k-30k gallons, Black by poolrx
- **How much does it cost?** € 138.03 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/15511536-pool-unit-101066-6-month-algaecide-treats-20k-30k-gallons)

## 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 & Proven:** Highly rated with thousands of satisfied users, delivering reliable algae control season after season.
- • **Effortless Installation:** Simply place in your pump or skimmer basket—no complicated setup required for instant pool clarity.
- • **Chemical Reduction Boost:** Significantly cuts down chlorine and other chemical usage, making your swim gentler on skin and eyes.
- • **Massive Coverage Capacity:** Effectively treats pools between 20,000 to 30,000 gallons, perfect for most residential pools.
- • **Long-lasting Algae Defense:** Up to 6 months of continuous algae elimination keeps your pool pristine without constant maintenance.

## Overview

PoolRx Pool Unit #101066 is a powerful 6-month algaecide tablet designed to treat 20,000 to 30,000 gallon pools. It simplifies pool care by eliminating all types of algae while reducing the need for harsh chemicals. Easy to use by placing in the pump or skimmer basket, it ensures long-lasting clarity and comfort, backed by thousands of positive reviews and a top ranking in pool algaecides.

## Description

PoolRx Pool Unit #101066 6 Month Algaecide Treats 20k-30k gallons, Black

Review: Really helps keep the pool clear. - This cartridge works great in the filter basket and really helps keep the pool clear. It does a good job eliminating algae, and I’ve found that I’m able to use a lot less chlorine with this product, which makes the pool much more comfortable to swim in and easier on the eyes. I’ve been using this for quite a few years now and it’s been very reliable. I recommend it.
Review: An excellent product! - So, I've had a chance to use this product for a while and write a proper review. I have an inground vinyl lined pool of about 25,000 gallons. For 32 years I have had issues dealing with algae. I was tired of spending a $100 on a gallon of algaecide at Leslie's that was barely effective and would still get some algae. I saw Pool Rix and decided to give it a try. The description states that it will last up to 6 months. Our summers are brutal with a lot of days over 100 degrees and decided if this controlled algae for at least three months I would be very pleased. Yesterday was the three month period and I have not seen a speck of algae since I started using Pool Rx. That has never happened in 32 years. I am very pleased how this has worked in my pool. As an added benefit I am using far less chlorine in the pool. With dichlor costing $300 for 50 lbs, this product is paying for itself. I even bought the booster but haven't had to use it yet. I would highly recommend this for anyone's pool.

## Features

- Simply place in pump basket or skimmer basket
- Eliminates all types of Algae
- Reduces Chemicals
- Effective for up to 6 months
- Simplifies Pool and Spa Care. Replace the Poolrx unit in basket every 12 months.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003UMOWWW |
| Best Sellers Rank | #2,380 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3 in Swimming Pool Algaecides |
| Brand | poolrx |
| Customer Reviews | 4.4 4.4 out of 5 stars (7,319) |
| Is Discontinued By Manufacturer | No |
| Item Form | Tablet |
| Item Weight | 1 pounds |
| Item model number | 101066 |
| Manufacturer | PoolRx |
| Number of Items | 1 |
| Product Benefits | Eliminates and Controls Algae |
| Product Dimensions | 3.25 x 3.25 x 4.25 inches |
| UPC | 705532371030 700553237037 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** poolrx
- **Item Form:** Tablet
- **Item Weight:** 1 Pounds
- **Product Benefits:** Eliminates and Controls Algae
- **UPC:** 705532371030 700553237037

## Images

![Pool Unit #101066 6 Month Algaecide Treats 20k-30k gallons, Black - Image 1](https://m.media-amazon.com/images/I/51rtkUeIj9L.jpg)

## Questions & Answers

**Q: How do you know when it needs to be replaced? We’ve only had ours in for 3 months and we’ve got an alge issue again. Is that the ‘sign’ to replace it?**
A: Carolyn- Assuming your pool water is in balance to the following parameters:

Chlorine 0.5 - 1.0 (ppm)
pH 7.2 - 7.8
Alk 80 - 120
TDS 0 - 5000
Calcium Hardness 200 - 500
Cyanuric 10 - 80

If you are using the correct size unit for your pool (30K gallons or less)  and are running your pump at least 6-8 hours per day then algae growth in the pool would indicate there is not enough of the PoolRx minerals reaming in your pool. If your pool is 20K gallons or less you will need to add 1 PoolRx Booster #102001 at this point. If your pool is between 20-40K gallons, you will need to add 2 PoolRx Boosters at this point.

PoolRx is not a “Time Released” product. All the minerals will dissolve out of the unit within a few hours of install.

A PoolRx unit is made of 2 parts:
1. Alloy treated cylinder in the middle of your blue or black unit is used to re-ionize the PoolRX minerals every time the two make contact. The cylinder portion of the system has a useful life of 12 MONTHS IN THE WATER. After 12 month in the chlorinated water, the alloy coating on the cylinder will be degraded to the point that it will no longer effectively re-charge the minerals.

2. PoolRx minerals these minerals come packed inside the cylinder of a Blue or Black unit or can be purchased separately as a Booster. Whether purchased as a part of a PoolRX unit or as Booster the minerals are the exact same formula and will do the exact same thing. These minerals completely dissolve into solution within a few hours of being placed in your skimmer or pump basket and form a residual throughout the pool water for up to 6 months. Over the 6 month period you will lose these minerals via algae kill and splash out. In order to keep the PoolRx minerals active for up to 6 months, you must also have the PoolRx cylinder in the water. Without making contact with the cylinder, the minerals will lose their effectiveness within 2-4 weeks of install.

To treat your pool for 12 month period:
1. Install PoolRX Blue or Black unit (based on Pool Size)
2. Approx 6 months later add the Booster (keeping the Blue or Black unit in your Pool)
3. Approx 6 months after Booster install remove the PoolRx Blue or Black unit and replace with a new one beginning the 12 month cycle all over again.
How are Minerals lost? 
PoolRx minerals are lost through algae kill, splash out back washing and filter cleaning. The more these factors happen, the more extreme the conditions, the shorter the lifespan of the minerals. 

How do I know when to add more minerals?
PoolRx uses proprietary chelating agents that protect the minerals from falling out of solution. Because of this, the PoolRx minerals cannot be tested for in the water by your typical reagent test equipment. You will know you need more minerals based on these factors:
1. Time: It’s been 4-6 months since you first installed PoolRx.
2. Your chlorine demand goes back up to where it was prior to installing PoolRx.
3. Your water is cloudy or you start to see algae.

Note: Because a small amount of minerals are still working in the water you will notice a gradual change over about a two week period. This gives you plenty of time to add a booster or new PoolRx unit.

**Q: I placed a pool rx mineral unit in my pool two weeks ago. prior to adding it i had 0 copper now my reading shows .4. any one else have this issue?**
A: I really don't think you should worry about that reading.  It has minerals in it so it is bound to show something.  I put this in on June 17th in my 27,000 gallon pool and have not added one bag of shock or any algeacides even one time this entire Summer.  It has been a miracle.  It is so hot here in Texas and I am usually scrubbing my pool and adding chemicals all Summer.  I have done absolutely nothing to my pool at all other than adding chlorine to the automatic chlorinator.  I do know that you are supposed to removed the cartridge if you are adding extra chemicals to the pool

**Q: Can you use this with a copper ionizer?**
A: I would not- We have a 27,000 gallon pool and one of the main activate ingredients is 47% + or - a few is copper. You'll create more problems down the road with high copper levels. We put one in near the pump in April and it last until late Aug for us. We buy another one to replace that one just to be on the safe side. It really depends on the usage and what area you live in. We are in FL and its gets high usage. We have the chlorine dialed down to the lowest setting and we add 1 pound of granulated chlorine every week to week and a half depending on how heavy the rain is. Otherwise this is one of the best items we found for the pool that reduces the chemicals used and its worked well for us as some of the people using it has sensitive skin. No issues with skin problems for us with this PoolRX.  Also they make a refill for this its almost the same as the new model so we end up buying the new one. A helpful hint for disposal. Once the life is out of the unit and you removed it, put it on solid ground and step on it. The plastic will separate and the metal inside will be loose. You can take all three parts and toss it into you recycling can.

**Q: How long does rx work?  seems there is a booster to get more useful life  from  the pool rx.  btw, we love this  product,  it really keeps the pool**
A: RB, there are two parts to the PoolRx system. 1. The PoolRx minerals (which come packed inside a new unit or sold separately as the PoolRx booster)2. The alloy treated cylinder which is inside the blue or black PoolRx basket. The minerals will last for 4-6 months based on your swim conditions and algae kill. The alloy cylinder will remain effective for 12 months in the water. By "in the water" we mean if you were to remove the unit after 6 months, no matter when you decide to replace it in the pool it will work for another 6 months as long as you add enough booster when you put the unit back in your pool. If you are using the black unit in your pool. After the 1st 6 months, you can get another 6 months of coverage by adding 2 PoolRx booster (part#102001)Regards-

## Customer Reviews

### ⭐⭐⭐⭐⭐ Really helps keep the pool clear.
*by C***Y on December 14, 2025*

This cartridge works great in the filter basket and really helps keep the pool clear. It does a good job eliminating algae, and I’ve found that I’m able to use a lot less chlorine with this product, which makes the pool much more comfortable to swim in and easier on the eyes. I’ve been using this for quite a few years now and it’s been very reliable. I recommend it.

### ⭐⭐⭐⭐⭐ An excellent product!
*by G***N on August 16, 2025*

So, I've had a chance to use this product for a while and write a proper review. I have an inground vinyl lined pool of about 25,000 gallons. For 32 years I have had issues dealing with algae. I was tired of spending a $100 on a gallon of algaecide at Leslie's that was barely effective and would still get some algae. I saw Pool Rix and decided to give it a try. The description states that it will last up to 6 months. Our summers are brutal with a lot of days over 100 degrees and decided if this controlled algae for at least three months I would be very pleased. Yesterday was the three month period and I have not seen a speck of algae since I started using Pool Rx. That has never happened in 32 years. I am very pleased how this has worked in my pool. As an added benefit I am using far less chlorine in the pool. With dichlor costing $300 for 50 lbs, this product is paying for itself. I even bought the booster but haven't had to use it yet. I would highly recommend this for anyone's pool.

### ⭐⭐⭐⭐⭐ Best Algee control product I have ever used and it last for months.
*by C***J on April 27, 2025*

I love this product. It eliminates algae. I highly recommend this. It says they last 6 months but I haven’t had one last that long. I went through 2 of them last summer. Which is still way cheaper than all the shock and other chemicals I was using every week and still fight an algae problem. The first one lasted about 2 months. The second one last through the winter. When I opened the pool this year I still had a fairly new one that I used at the end of the summer. I saved it and used it to open my pool this year. My pool was so green that you could not see the bottom. I opened the pool but didn’t have time to shock it or do anything. I stuck the pool RX on the skimmer to see if it would help at all. 1 week later my pool was clear with zero shock used. That blew my mind. I thought it was just a preventative but it killed all the algae and cleared the pool up. My water started getting green again a month later so I shocked it and bought this Pool RX to start the new pool season. I still use a chlorine tab floater but I don’t shock the pool but maybe once a month now. I only do that because people say I should. But my water is crystal clear. Just try it. I think you will be impressed. But you will likely need two of the to complete the pool season. But it is worth it because the maintenance is down to basically just vacuuming once a week.

## Frequently Bought Together

- Pool RX 101066 6 Month Algaecide Treats 20k-30k gallons, Black
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- HTH 52037R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal Clear Water - Shock Treatment, 1lb (12 Pack)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-12*