---
product_id: 376365476
title: "PoolRX+ spa Unit 400-1,000 gallons"
brand: "pool rx"
price: "HK$645"
currency: HKD
in_stock: true
reviews_count: 5
category: "Pool Rx"
url: https://www.desertcart.hk/products/376365476-poolrx-spa-unit-400-1-000-gallons
store_origin: HK
region: Hong Kong
---

# Up to 6 months of continuous spa protection NSF/ANSI 50 Certified for trusted safety 3 active ingredients for max algae defense PoolRX+ spa Unit 400-1,000 gallons

**Brand:** pool rx
**Price:** HK$645
**Availability:** ✅ In Stock

## Summary

> 💧 Keep your spa sparkling and algae-free—because your relaxation deserves the best!

## Quick Answers

- **What is this?** PoolRX+ spa Unit 400-1,000 gallons by pool rx
- **How much does it cost?** HK$645 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/376365476-poolrx-spa-unit-400-1-000-gallons)

## Best For

- pool rx enthusiasts

## Why This Product

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

## Key Features

- • **Certified Spa Safety:** EPA registered and NSF/ANSI 50 certified for peace of mind and quality assurance.
- • **Chemical Demand Reducer:** Cut down on harsh chemicals and simplify your spa routine effortlessly.
- • **Long-Lasting Spa Clarity:** Enjoy crystal-clear water with up to 6 months of low-maintenance care.
- • **Universal Spa Compatibility:** Works seamlessly with Chlorine, Salt, UV, or Ozone spa systems.
- • **Triple-Action Algaecide Power:** Copper, Zinc & Silver combine to annihilate all spa algae types.

## Overview

PoolRX+ Spa Unit is a compact, magenta-colored algaecide designed for spas holding 400-1,000 gallons. Featuring a powerful triple-ingredient formula (Copper Sulphate, Zinc Sulfate, Silver Nitrate), it effectively eliminates all types of algae while reducing chemical use. Certified by NSF/ANSI 50 and EPA registered, it simplifies spa maintenance by providing up to 6 months of continuous protection, compatible with all major spa sanitation systems.

## Description

Pool Rx+ [Pool Rx Plus] is the updated algaecide formula from Pool Rx. Pool Rx+ contains three active ingredients Copper Sulphate, Zinc Sulfate and Silver Nitrate, adding additional layers of protection to the original Pool Rx formula you have come to trust. The Magenta Pool Rx+ spa unit is an EPA Registered, NSF/ANSI 50, Certified algaecide supporting 400-1,000 gallons of water. Pool Rx+ reduces chemical demand, improves water quality, simplifying spa care for up to 6 months. Re-treatment intervals vary based upon conditions such as bather load and splash out. Replace the Pool Rx+ spa/hot tub unit every time the spa/hot tub is drained and refilled, or if algae is coming back or the water looks a little dull, even though the water is balanced, and has at least 0.5-1.0 ppm of chlorine. Pool Rx+ products can support any size body of water & are ideal for use in Chlorine, Salt, UV or Ozone spa/hot tubs.

Review: I have a swim spa that sits in the sun in Florida. For the past few years I had problem with algae appearing every week. When I would apply a liquid algaecide it would create a foamy mess with lots of dead algae that needed to be removed and the perimeter where the water met the spa sides needed to be wiped down. I stumbled up the PoolRX product and thought I would give it a try. Before using PoolRX I thoroughly cleaned all algae using a product that circulates through all the plumbing for a day or two and then drained the spa (sorry, cannot remember the name of that product). I placed the PoolRX canister (it is small) in the filter pleats and it has been keeping my spa very clean and algae free for over 1 month. YES! Blue water, no algea! Chemical maintenance is also easier. Give the PoolRX a try, I imagine the larger sized version work just as well for a full sized pool.
Review: Using in a small above ground 10x10x4 air up pool and havent seen any sort of alagey buildup or anything yet. Does leave a weird film on the water if the water doesnt get disturbed and it smells strange but its still clear and doesnt seem to be affecting me so i approve. Much cheaper than using chlorine and less damage to the pool

## 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
- Simplifies Spa care

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09FWJYLN1 |
| Brand | Pool RX |
| Color | Magenta |
| Customer Reviews | 4.4 4.4 out of 5 stars (478) |
| Date First Available | 22 September 2021 |
| Height | 2 inches |
| Item model number | 331055 |
| Manufacturer | Pool Rx |
| Number of Items | 1 |
| Product Dimensions | 5.08 x 5.08 x 5.72 cm; 53.86 g |
| Usage | Spa |
| Width | 6.3 inches |

## Product Details

- **Brand:** Pool RX
- **Item form:** Liquid
- **Item weight:** 1.9 Ounces
- **Product benefits:** Controls Algae
- **UPC:** 700553310556

## Images

![PoolRX+ spa Unit 400-1,000 gallons - Image 1](https://m.media-amazon.com/images/I/51X6P+EkgOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***R on 14 April 2023*

I have a swim spa that sits in the sun in Florida. For the past few years I had problem with algae appearing every week. When I would apply a liquid algaecide it would create a foamy mess with lots of dead algae that needed to be removed and the perimeter where the water met the spa sides needed to be wiped down. I stumbled up the PoolRX product and thought I would give it a try. Before using PoolRX I thoroughly cleaned all algae using a product that circulates through all the plumbing for a day or two and then drained the spa (sorry, cannot remember the name of that product). I placed the PoolRX canister (it is small) in the filter pleats and it has been keeping my spa very clean and algae free for over 1 month. YES! Blue water, no algea! Chemical maintenance is also easier. Give the PoolRX a try, I imagine the larger sized version work just as well for a full sized pool.

### ⭐⭐⭐⭐⭐ Review
*by C***N on 11 June 2024*

Using in a small above ground 10x10x4 air up pool and havent seen any sort of alagey buildup or anything yet. Does leave a weird film on the water if the water doesnt get disturbed and it smells strange but its still clear and doesnt seem to be affecting me so i approve. Much cheaper than using chlorine and less damage to the pool

### ⭐⭐⭐⭐ Review
*by R***B on 29 June 2024*

My water-fall pond (without fish or plants) is 450 gallons. The instructions state to place the metal diffuser in a high-flow area like a skimmer or pump basket. Since I have no skimmer, I placed it at the bottom of my pump vault where water is sucked in for distribution. After a day the water seemed slightly cloudy so I checked on the device. I reached down into the cloudy vault, felt around and found the object, lifting it to the surface. In the process, a lot of concentrated blue water dumped out. The object apparently wasn't receiving enough water flow to distribute the metals. I moved the diffuser (which, by website, rejuvenates the electrical charge on the metals when the ions pass through the caged unit) to a visible area where I could see current. The device appears to be working well over the 2 weeks it's been in use. I have lightly, green-tinged foam (edges) that collects at the end of the last stream bed, where the water drops down to a rock-covered underground reservoir. No visible algae growth is apparent anywhere. However, I had a yellow-mustard algae outbreak last year and despite repeated treatments, is still present in the typical sand/dirt appearance. This algae hasn't "grown out" into a vegetative state but I had hoped that the algicide would have killed and eliminated the sandy-appearing algae spores. I'm speculating that this algicide is mostly a preventative agent (against mass reproduction that leads to vegetative growth). Note- value and longevity rating is based on company spec. It may provide a one-time, "drop into the water" convenience but most water features require some form of attendance weekly (or bi-weekly) so an algicide that is applied at the same time and works just as efficiently would prove to be a better value for the money. The website has a FAQ section but some of the answers are incomplete sentences, as if the answer exceeded the available space and therefore wasn't displayed. The website also lacked a more complete description of how the product works. That may not be a huge deal for most people UNLESS they are planning to put any form of life into their water feature. Since most companies selling a product are only interested in telling you what THEY want you to know, to buy the product, the information is biased to one side-the seller. I suggest every consumer do their due diligence in researching the company, product and mechanism to get a more complete picture before buying.

## Frequently Bought Together

- PoolRX+ spa Unit 400-1,000 gallons
- PoolRX+ pool unit 7.5k-20k gallons
- PoolRX+ Pool Unit 20k-30k gallons

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-03-05*