Buy Now, Pay Later
As low as
$10.83
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Free shipping on this product
30-day returns
Learn more
FREE 30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Tuesday, Apr 21
Recently Viewed
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.
Description
PoolRx Pool Unit 101066 6 Month Algaecide Treats 20k-30k gallons, Black
Brand: poolrx
Item Weight: 1 Pounds
Item Form: Tablet
Product Benefits: Eliminates and Controls Algae
UPC:
Brand Name: poolrx
UPC: 705532371030 700553237037
Item Type Name: 6 Month Algaecide Treats 20k-30k gallons, Black
Included Components: PoolRx Black unit for 20,000 - 30,000 gallons, directions for use
Manufacturer: PoolRx
Unit Count: 1.0 Count
Item Form: Tablet
Product Benefits: Eliminates and Controls Algae
Item Weight: 1 Pounds
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Tuesday, Apr 21
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
Top Amazon Reviews
Size: Single Unit
Pattern Name: Algaecide Treats
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.
...
show more
Reviewed in the United States on August 16, 2025 by Goldpanman
Size: Single Unit
Pattern Name: Algaecide Treats
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.
...
show more
Reviewed in the United States on April 27, 2025 by creative wholesale RJ
Size: Single Unit
Pattern Name: Algaecide Treats
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.
...
show more
Reviewed in the United States on December 14, 2025 by cinray
Size: Single Unit
Pattern Name: Algaecide Treats
Have ordered this item a couple of times, and it works great!!
Reviewed in the United States on April 4, 2026 by Steve Gandolfo
Size: Single Unit
Pattern Name: Algaecide Treats
The Pool RX-Black works well... It is expensive ($90/unit-good for a 25-30K gallon pool) and in the CA summer heat may not last the full advertized 6 mos effective life. It also requires that you keep your pool chemistry balanced (free Chlorine levels, pH, Alkalinity, Ca Hardness). I have tried a number of other liquid algicides with mostly marginal to poor results - they are all expensive, especially if you have to keep adding more because they aren't doing an effective job and you have to do extensive cleaning to keep the algae off the bottom and sides of the pool. The Pool RX unit just sits in the skimmer or pre-filter basket and controls both black and yellow algae (good pool chemistry is important). If I got the full 6 mos of effective control with one unit, I would have given Pool RX 5 stars.
...
show more
Reviewed in the United States on April 5, 2025 by Tom M
Size: Single Unit
Pattern Name: Algaecide Treats
We order a new one every spring for our 30,000 gallon pool and it helps tremendously with the algae from all the pollen and rain. Saves a ton on chemicals and lasts all year.
Reviewed in the United States on April 9, 2026 by Mary Bertelsen
Size: Single Unit
Pattern Name: Algaecide Treats
PoolRx keeps the water of my swimming pool clear, and last close to 6 months.
Reviewed in the United States on March 23, 2026 by Cristina
Size: Single Unit
Pattern Name: Algaecide Treats
I have a dark bottom pool and it tends to get algae easily. after adding chlorine and then condition, it was still green. adding this product made my pool sparkling by the next morning!! I would buy this again.
Reviewed in the United States on April 8, 2026 by masb