---
product_id: 459193523
title: "Clorox Pool&Spa Algaecide + Clarifier 42128CLX"
brand: "clorox pool&spa"
price: "A$252"
currency: AUD
in_stock: true
reviews_count: 5
category: "Clorox Pool&Spa"
url: https://www.desertcart.com.au/products/459193523-clorox-pool-and-spa-algaecide-clarifier-42128clx
store_origin: AU
region: Australia
---

# works in all pool types incl. saltwater 128 fl oz powerful formula non-foaming, easy maintenance Clorox Pool&Spa Algaecide + Clarifier 42128CLX

**Brand:** clorox pool&spa
**Price:** A$252
**Availability:** ✅ In Stock

## Summary

> 🌟 Dive into clarity — your pool’s new secret weapon!

## Quick Answers

- **What is this?** Clorox Pool&Spa Algaecide + Clarifier 42128CLX by clorox pool&spa
- **How much does it cost?** A$252 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/459193523-clorox-pool-and-spa-algaecide-clarifier-42128clx)

## Best For

- clorox pool&spa enthusiasts

## Why This Product

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

## Key Features

- • **Smart Application:** Add at deepest point with filter running for max coverage
- • **Effortless Pool Care:** Non-foaming formula means less hassle, more swim time
- • **Universal Compatibility:** Safe & effective in all pools, including saltwater setups
- • **Crystal Clear Confidence:** Kills & prevents all algae types for sparkling water
- • **Expert Guidance On-Demand:** Use Clorox Pool App for personalized testing & dosing

## Overview

Clorox Pool&Spa Algaecide + Clarifier is a 128 fl oz professional-grade treatment that kills and prevents green, mustard, and black algae in all pool types, including saltwater. Its non-foaming formula simplifies maintenance while delivering long-lasting algae defense. For optimal results, apply at the pool’s deepest point with the filter running. The Clorox Pool App offers expert testing and dosage recommendations, empowering you to keep your pool crystal clear and swim-ready all season.

## Description

Product Description Clorox Pool&Spa Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1);43128CLX. Directions Add to the deeper end of the pool with the filter running. Swimming pool water circulation during application of chemicals helps disperse chemicals throughout the pool for maximum coverage. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Safety Warning Keep out of reach of children See more

Review: Clorox Pool and Spa, siwmming pool algaecide and clarifier is an excellent product to help homeowners maintain their swimming pool including salt-water pools. Even if your pool is green and you can't see the bottom, pour the amount suggested on the label and in a couple days your pool will be absolutely crystal clear. I have not noticed a change in PH level but I have noticed this is the only chemical that was able to treat and clear a pool that has not had proper maintence for a while. I'm a disabled veteran and I still try to maintain my own pool but at times I can't get to it. In a nutshell, this stuff safes me time, effort and a ton of money not having to have someone else come clean my pool. NOW!!!! You still have to do some maintenance, sweeping the bottom, cleaning the filter and debris collectors, but Clorox has made the job dramitically easier. HIGHLY RECOMMENDED
Review: I can't believe that for several years, I thought brushing off yellow algae every other day was a fact of life for certain pool owners, like myself. That due to our location, proximity to certain trees, and whatnot, that mustard algae was a fact of life. It is not folks, ever since I discovered this product, I am on cruise control. But you simply can't pour this thing in without rolling up your sleeves and doing some initial clean-up to allow the algaecide to work its best. This was my recipe. 1. Scrub everywhere you see algae. You'll be shocking your pool after, but you want to scrub and clean so the chlorine can be most effective. Any spores that survive can respawn easily. So scrub, scub, scub!! 2. Clean your filter good!!! Check your pump basket. The clear lid of my pump basket had yellow and green spots, that's algae... clean it! 3. If you have an automatic pool filler. Take it apart and clean it, you'll be surprised at the gush of yellow cloudy water coming out. 4. After cleaning up and busting up all the algae, double shock your pool. Whatever is your normal shock dosage, double it. 5. After shocking, immediately apply the Clorox product. Follow the Clorox initial dosage for the algaecide & clarifier. They have two types of initial dosage, one where algae is present, and one where algae isn't. For me, of course algae was present, so I follow that dosage. 6. Now, let the filter run for 24 hours. I let mine run at 2000 rpm. My pool is about 13k gallons. 7. That's it... your pool will be sparkling the next day, and here on after, you just need to maintain your pool as you normally do, but with the addition of the clorox algaecide + clarifier WEEKLY dosage. The weekly dosage is much less than the initial dosage. For me, a bottle will last me FOUR weekly dosages. It has been about 6 months now, and I've been on auto-pilot. I haven't had to scrub any yellow algae from my walls. Understand that before this product, simply cleaning my filter and shocking DID NOT work. The algae would come back a week later. I always thought these types of products are a waste of money. That all I needed to do was clean my filter and shock, and if that didn't work, then algae was simply a fact of life for where I live. I was wrong!!! This is a supplementary product you need to battle algae, and it 100% works. I was expecting to still scrub normal non-yellow dirt and debris off my walls, but as it turns out, there is no such thing as "normal" dirt and debris. Turns out the algae spores were the reason why dirt and debris would stick. So you either have yellow walls, or clean walls, there's no in between. Debris shouldn't be sticking when you have no algae. Scrubbing yellow spots from my pool every other day was a fact of life for me, for a couple of years. Not anymore. 5-Stars. OCT 6, 2025 UPDATE: -------------------------- So I did my filter clean this past Sunday. I try to do it every 4 months. Prior to using algaecide and clarifier, the cartridge would be completely yellow/brownish. Yesterday, I only saw normal dirt, completely gray and black. So that means this product is working. During this time, I will also do a more thorough check of the automatic pool filler by disengaging the garden hose, and flipping it upside down to clean the inside. Again, prior to using Clorox, the white plastic floater would be very yellow. Yesterday, I did noticed yellow and green spots on the white plastic floater, not as bad as before, but you can tell it was starting to spawn. So the automatic pool filler is definitely the weak spot in the system, which makes sense. Debris can get under and inside the filler. Also, my robot skimmer isn't good at getting debris that's around the filler. And when I manually skim, using my foot, I would slide/move the filler along the edge of the pool, so I can get the debris that's surrounding it, but I don't flip it over. So for your weekly dosage routine, I also recommend taking this time to flip over your pool filler and give it a good cleaning as well. I'm still absolutely ecstatic about this product. After using it for half a year, the only spot to develop algae was this automatic pool filler, and it wasn't much. But now I'll check it every week, and completely eliminate this weak spot. OCT 19, 2025 UPDATE: --------------------------- Okay, so I can't emphasize enough... the automatic pool filler is 100% the weak point. At least in my case. In my last update, I said I would check it every week to eliminate this weak spot. But I was simply flipping it over, without undoing the garden hose, to observe the white floater container. If it had no green or yellow stains on it, I thought I was good. I just sprayed any grime on the container with my garden hose. I did the same today, but when I turned the water back on, a gush of yellow cloud came out. So obviously, something had been building inside. But again, not strong enough to cause yellow walls due to my weekly dosage. But now I must stress, every week when you do your weekly dosage, undo the automatic pool filler. Even if the container looks white, the spores are probably spawning at the connectors and garden hose head. Disengage these components and clean them. And when you connect the garden hose back, turn on the water, but do not put the filler in the pool yet. This is so if there is any gush of yellowy stuff, it won't go in your pool. This should be my last update. LOL! Good luck!

## Features

- Suspected of damaging fertility or the unborn child.
- Use biocides safely. Always read the label and product information before use.
- Pool Algae Treatment: Our Pool Algaecide and Clarifier is specially formulated to treat existing algae while providing long-lasting defense against stubborn growth, ensuring that your pool remains clear and algae-free for an extended period of time.
- Maintain Crystal Clear Water: Kills and prevents all types of swimming pool algae (green, mustard, black algae) for crystal clear swimming pool water.
- Non-Foaming Formula: Spend less time maintaining and more time enjoying your pool with this Swimming Pool Algaecide and Clarifier, which features a non-foaming formula.
- Suitable for Use in All Types of Pools: This product is proven to meet the needs of every pool owner, as it is compatible with all types of pools, including saltwater pools. You can trust our product to deliver exceptional performance and keep your pool water clean and clear.
- For best results, add to the deepest end of the pool with the filter running. Circulating pool water when applying chemicals helps disperse chemicals throughout the pool for maximum coverage
- Clorox Pool App: Test like an expert anytime, anywhere with the Clorox Pool App. Solve common swimming pool problems and get personalized product and dosage recommendations.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N132P9C |
| Customer Reviews | 4.5 4.5 out of 5 stars (14,193) |
| Date First Available | 20 Jan. 2017 |
| Item model number | 43128CLX |
| Item volume | 128 Fluid Ounces |
| Manufacturer | CLOROX Pool&Spa |
| Material type | Plastic |
| Part number | 42128CLX |
| Product Dimensions | 16.13 x 16.13 x 28.27 cm; 3.63 kg |

## Product Details

- **Brand:** CLOROX Pool&Spa
- **Item form:** Liquid
- **Item weight:** 3.63 kg
- **Product benefits:** Prevents and treats algae in the pool
- **UPC:** 810821026246

## Images

![Clorox Pool&Spa Algaecide + Clarifier 42128CLX - Image 1](https://m.media-amazon.com/images/I/710ZscxZPYL.jpg)
![Clorox Pool&Spa Algaecide + Clarifier 42128CLX - Image 2](https://m.media-amazon.com/images/I/81gqz0yOFWL.jpg)
![Clorox Pool&Spa Algaecide + Clarifier 42128CLX - Image 3](https://m.media-amazon.com/images/I/71eNV64UD8L.jpg)
![Clorox Pool&Spa Algaecide + Clarifier 42128CLX - Image 4](https://m.media-amazon.com/images/I/81Vqn7xAJSL.jpg)
![Clorox Pool&Spa Algaecide + Clarifier 42128CLX - Image 5](https://m.media-amazon.com/images/I/81b9b+VEaXL.jpg)

## Questions & Answers

**Q: Is this for more than 1? If so why does Walmart sell it for $7?**
A: This is a more dilute / lower concentration of an algecide more often sold for home delivery at 60% concentration. The lower concentration makes it easier to measure a preventive or maintainance dose for an above ground backyard pool that might need 1 1/4 oz of a 60% poly-sim algecide. Difficulty measuring the higher concentration chemicals can result in over-dosed pools and adverse reactions in swimmers. Mass market retailers have been selling lower concentration chemicals for small pools and spas since the late 1960’s. The extra gallon of water is bulky and heavy to warehouse and ship and isn’t an ideal product for a home delivery marketing channel. As of late March 2018 the WalMart price happens to be $10, but it isn’t “pool season” in most places so that may be more of a placeholder than a 2018 price.

**Q: Is this a 1 gallon container?**
A: Hi. We are the manufacturer of Clorox Pool&Spa products. The Algaecide + Clarifier comes in a one gallon container. Please give us a call at 1-800-SOS-POOL if you have any further questions. We are available Monday to Friday from 8:00am to 6:00pm EST.

**Q: Does this kill all types of algae**
A: Hi, We are the manufacturer of Clorox Pool&Spa products. The formulation in the Algaecide + Clarifier can kill green and mustard algae and prevent black algae. If you have any other questions or concerns, please give us a call at 1-800-SOS-POOL.

**Q: How long do You wait before getting in pool after you use it???**
A: Hi Josie, We are the manufacturer of Clorox Pool and Spa products. You can wait 15 minutes before swimming. If you have any other questions or concerns, please give us a call at 1-800-SOS-POOL.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by U***L on 23 January 2026*

Clorox Pool and Spa, siwmming pool algaecide and clarifier is an excellent product to help homeowners maintain their swimming pool including salt-water pools. Even if your pool is green and you can't see the bottom, pour the amount suggested on the label and in a couple days your pool will be absolutely crystal clear. I have not noticed a change in PH level but I have noticed this is the only chemical that was able to treat and clear a pool that has not had proper maintence for a while. I'm a disabled veteran and I still try to maintain my own pool but at times I can't get to it. In a nutshell, this stuff safes me time, effort and a ton of money not having to have someone else come clean my pool. NOW!!!! You still have to do some maintenance, sweeping the bottom, cleaning the filter and debris collectors, but Clorox has made the job dramitically easier. HIGHLY RECOMMENDED

### ⭐⭐⭐⭐⭐ Review
*by M***A on 24 September 2025*

I can't believe that for several years, I thought brushing off yellow algae every other day was a fact of life for certain pool owners, like myself. That due to our location, proximity to certain trees, and whatnot, that mustard algae was a fact of life. It is not folks, ever since I discovered this product, I am on cruise control. But you simply can't pour this thing in without rolling up your sleeves and doing some initial clean-up to allow the algaecide to work its best. This was my recipe. 1. Scrub everywhere you see algae. You'll be shocking your pool after, but you want to scrub and clean so the chlorine can be most effective. Any spores that survive can respawn easily. So scrub, scub, scub!! 2. Clean your filter good!!! Check your pump basket. The clear lid of my pump basket had yellow and green spots, that's algae... clean it! 3. If you have an automatic pool filler. Take it apart and clean it, you'll be surprised at the gush of yellow cloudy water coming out. 4. After cleaning up and busting up all the algae, double shock your pool. Whatever is your normal shock dosage, double it. 5. After shocking, immediately apply the Clorox product. Follow the Clorox initial dosage for the algaecide & clarifier. They have two types of initial dosage, one where algae is present, and one where algae isn't. For me, of course algae was present, so I follow that dosage. 6. Now, let the filter run for 24 hours. I let mine run at 2000 rpm. My pool is about 13k gallons. 7. That's it... your pool will be sparkling the next day, and here on after, you just need to maintain your pool as you normally do, but with the addition of the clorox algaecide + clarifier WEEKLY dosage. The weekly dosage is much less than the initial dosage. For me, a bottle will last me FOUR weekly dosages. It has been about 6 months now, and I've been on auto-pilot. I haven't had to scrub any yellow algae from my walls. Understand that before this product, simply cleaning my filter and shocking DID NOT work. The algae would come back a week later. I always thought these types of products are a waste of money. That all I needed to do was clean my filter and shock, and if that didn't work, then algae was simply a fact of life for where I live. I was wrong!!! This is a supplementary product you need to battle algae, and it 100% works. I was expecting to still scrub normal non-yellow dirt and debris off my walls, but as it turns out, there is no such thing as "normal" dirt and debris. Turns out the algae spores were the reason why dirt and debris would stick. So you either have yellow walls, or clean walls, there's no in between. Debris shouldn't be sticking when you have no algae. Scrubbing yellow spots from my pool every other day was a fact of life for me, for a couple of years. Not anymore. 5-Stars. OCT 6, 2025 UPDATE: -------------------------- So I did my filter clean this past Sunday. I try to do it every 4 months. Prior to using algaecide and clarifier, the cartridge would be completely yellow/brownish. Yesterday, I only saw normal dirt, completely gray and black. So that means this product is working. During this time, I will also do a more thorough check of the automatic pool filler by disengaging the garden hose, and flipping it upside down to clean the inside. Again, prior to using Clorox, the white plastic floater would be very yellow. Yesterday, I did noticed yellow and green spots on the white plastic floater, not as bad as before, but you can tell it was starting to spawn. So the automatic pool filler is definitely the weak spot in the system, which makes sense. Debris can get under and inside the filler. Also, my robot skimmer isn't good at getting debris that's around the filler. And when I manually skim, using my foot, I would slide/move the filler along the edge of the pool, so I can get the debris that's surrounding it, but I don't flip it over. So for your weekly dosage routine, I also recommend taking this time to flip over your pool filler and give it a good cleaning as well. I'm still absolutely ecstatic about this product. After using it for half a year, the only spot to develop algae was this automatic pool filler, and it wasn't much. But now I'll check it every week, and completely eliminate this weak spot. OCT 19, 2025 UPDATE: --------------------------- Okay, so I can't emphasize enough... the automatic pool filler is 100% the weak point. At least in my case. In my last update, I said I would check it every week to eliminate this weak spot. But I was simply flipping it over, without undoing the garden hose, to observe the white floater container. If it had no green or yellow stains on it, I thought I was good. I just sprayed any grime on the container with my garden hose. I did the same today, but when I turned the water back on, a gush of yellow cloud came out. So obviously, something had been building inside. But again, not strong enough to cause yellow walls due to my weekly dosage. But now I must stress, every week when you do your weekly dosage, undo the automatic pool filler. Even if the container looks white, the spores are probably spawning at the connectors and garden hose head. Disengage these components and clean them. And when you connect the garden hose back, turn on the water, but do not put the filler in the pool yet. This is so if there is any gush of yellowy stuff, it won't go in your pool. This should be my last update. LOL! Good luck!

### ⭐⭐⭐⭐⭐ Review
*by S***. on 8 February 2026*

This product works great for my pool, I’ve tried other brands but none of them work like this one!!

## Frequently Bought Together

- Clorox® Pool&Spa™ Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1)
- Clorox Pool&Spa XTRABLUE 3” Chlorinating Tablets, Individually Wrapped, Kills Bacteria & Stops Algae (5 LB)
- HTH 52036R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal Clear Water - Shock Treatment, (6 Pack)

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---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-03-06*