---
product_id: 503275006
title: "PoolRx Yellow Spa Unit Treats 100-400 Gallons"
brand: "PoolRx"
price: "€ 28.06"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/503275006-poolrx-yellow-spa-unit-treats-100-400-gallons
store_origin: NL
region: Netherlands
---

# PoolRx Yellow Spa Unit Treats 100-400 Gallons

**Brand:** PoolRx
**Price:** € 28.06
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** PoolRx Yellow Spa Unit Treats 100-400 Gallons by PoolRx
- **How much does it cost?** € 28.06 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/503275006-poolrx-yellow-spa-unit-treats-100-400-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

## 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 yellow Pool Rx+ spa unit is an EPA Registered, NSF/ANSI 50, Certified algaecide supporting 100-400 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.   Maintain chlorine 0.5ppm - 1.0ppm  Maintain pH 7.2 - 7.8  Maintain alkalinity 80 - 120  Maintain cyanuric acid 10 - 80  Replace the unit every 12 months  Add PoolRx booster after 4 - 6 months if needed  Copper Sulphate Pentahydrate - 86.85%  Zinc Sulfate Monohydrate - 1.51%  Silver Nitrate - 0.40%  Other Ingredients - 11.24%

## Images

![PoolRx Yellow Spa Unit Treats 100-400 Gallons - Image 1](https://i5.walmartimages.com/asr/3e681d13-547d-429a-ba19-7ca0a33efeca.50f143403a6bc3be0bd9585bf5b82ab6.jpeg)
![PoolRx Yellow Spa Unit Treats 100-400 Gallons - Image 2](https://i5.walmartimages.com/asr/26d154c5-154f-4c03-ad4c-3de900081c4d.cbb74b020b7a9fe61c088dac9b7d75cb.jpeg)
![PoolRx Yellow Spa Unit Treats 100-400 Gallons - Image 3](https://i5.walmartimages.com/asr/23821049-d718-4c7b-b8a4-7e1b11da2247.b7da15c05e7f1a74f2c07763a89d0711.jpeg)
![PoolRx Yellow Spa Unit Treats 100-400 Gallons - Image 4](https://i5.walmartimages.com/asr/f6ab7a3b-9fd7-4234-aa44-c8817752ea55.d655984755b0b4fb3edae3f152c60ba3.jpeg)

---

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---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-17*