Clorox® Pool&Spa™ Family-Safe Algaecide, Trusted Pool Treatment Safe for Kids and Pets, 128 Fl Oz
Clorox® Pool&Spa™ Family-Safe Algaecide, Trusted Pool Treatment Safe for Kids and Pets, 128 Fl Oz
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Why you'll love it
- Trusted Clorox brand reputation for pool and home sanitation
- Single product kills green, mustard, and black algae — no need to identify algae type first
- Non-foaming formula means swimmers can return to the pool quickly without residue
- Works in all pool types including saltwater, eliminating guesswork about compatibility
- Companion Clorox Pool App provides personalized dosage recommendations, reducing fear of over- or under-dosing
- Large 128 oz jug covers long-term maintenance, offering better value per treatment than smaller bottles
Perfect for
- Treating an existing algae bloom in a residential swimming pool
- Routine weekly prevention to keep pool water clear between shock treatments
- Clearing cloudy water caused by early-stage algae growth
- Maintaining algae-free water in saltwater pool systems
- Restoring water clarity after heavy rain or bather load

For Algae Prevention
Prevent and treat algae while keeping water crystal clear with Algaecide + Clarifier.
Prevents Algae
Defends against stubborn pool algae.
Clears Water
Built-in clarifier helps to maintain crystal clear water.
Salt Pool Compatible
Non-foaming formula is suitable for all pool types, including saltwater pools.
Weekly-Use
Use weekly as part of a regular maintenance routine.
Brush & Clean
Brush surfaces weekly to remove dirt and debris that can cause algae.
Test Weekly
Your pool chemistry can change quickly. Test your pool water weekly to ensure your chlorine and pH remain within optimal swimming levels.

Product Information
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.
Clorox Pool&Spa Swimming Pool Algaecide and Clarifier, Prevents and Treats Pool Algae, Clears Water, 128 Fl Oz (Pack of 1);43128CLX.Global Trade Identification Number: 00810821026246
Number of Items: 1
Item Type Name: Pool Algaecide
Included Components: 128 oz of Algaecide+Clarifier
Item Form: Liquid
Product Benefits: Controls Algae
Item Weight: 8 pounds
Frequently Asked Questions
Is this product safe to use in a pool where small children swim regularly?
When used at label-recommended doses, this algaecide is safe for residential pools used by children. The non-foaming formula means no chemical residue sits on the surface where kids play, and the Clorox Pool App helps prevent accidental over-dosing.
What happens if my dog accidentally drinks some of the treated pool water?
At standard maintenance doses, the product is formulated for residential pool use. As with any pool chemical, prevent pets from drinking untreated concentrate directly from the jug. Once diluted in pool water, accidental small sips are unlikely to cause harm, but always provide fresh drinking water nearby.
Does the non-foaming formula mean fewer chemical residues for kids to touch on the pool surface?
Yes. Non-foaming action means the active ingredients stay dissolved in the water rather than forming surface foam that children might come into contact with during play. This supports cleaner water play for active families.
Can I apply it and let my kids swim the same day?
Yes, in most cases re-entry is allowed shortly after the product has circulated. The non-foaming formula is designed for fast re-entry, so families don't need to wait extended periods. Always verify with a quick test using the Clorox Pool App.
Is there a risk of over-dosing that could harm swimmers or pets?
The Clorox Pool App provides personalized dosage based on your pool size and current readings, dramatically reducing the risk of over-dosing. Following label directions and app guidance keeps the water safe for all swimmers.
How do I know I haven't added too much — is there a safety margin built in?
Yes. The product is designed with a wide safety margin for residential use. Even at slightly above-recommended doses, the formula remains non-foaming and well-tolerated. Use the Clorox Pool App for precise guidance and peace of mind.
Is the container child-resistant to prevent accidental opening?
The 128 oz jug is built with a standard cap closure. As with all pool chemicals, store it in a locked or out-of-reach location away from children and pets until use, just as you would with any household cleaning product.
Will this product irritate sensitive skin, eyes, or lungs when used correctly?
At recommended doses, the formula is well-tolerated. The non-foaming clarifier action means fewer airborne chemical particles, which is helpful for swimmers and family members with sensitivities.
Can I use it safely around landscaping, lawns, and garden beds?
When applied directly to pool water as directed, the product is contained within the pool system. Avoid pouring concentrate directly onto grass or plants. With proper dosing, occasional splash-out onto lawn areas is typically not harmful.
Does using this reduce the need for higher-chlorine shock treatments that are harsher on skin?
Yes. Regular weekly use of this algaecide prevents most algae blooms, which means fewer emergency shock treatments with high chlorine levels. That translates to gentler water for sensitive swimmers over the long term.
Is it safe to store in a poolside shed through hot summer months?
Yes, the container is designed for typical outdoor storage conditions. For maximum stability, keep it out of direct sunlight and away from extreme heat. Most homeowners store it in a shaded shed or garage without issues.
What if I spill some on the pool deck — is it hazardous to walk on?
Rinse the area with fresh water promptly. At full concentrate, the product is a pool chemical and should be cleaned up like any household cleaner. Once diluted and dry, the deck is safe for normal use.
Does this product support a healthier swimming environment compared to letting algae grow unchecked?
Yes. Algae blooms harbor bacteria and create slip hazards on pool surfaces. Preventing algae with this product supports both water quality and physical safety, especially for active families and elderly swimmers.
Is it safer to use one combined product instead of multiple separate algaecides and clarifiers?
For most homeowners, yes. Using one trusted, broad-spectrum product reduces the chance of chemical interactions, simplifies storage, and lowers the risk of mis-dosing that comes with juggling multiple bottles.
How does this compare to chlorine alone in terms of swimmer safety?
Chlorine alone often requires higher doses to control algae, which can cause more eye and skin irritation. This algaecide works alongside chlorine at lower chlorine levels, creating a more comfortable swimming experience with the same algae protection.
Will I still need a fence, cover, and other physical pool safety measures?
Absolutely. Chemical water care is just one layer of pool safety. Always follow local codes for barriers, supervision, and pool covers. This product supports water quality safety but does not replace physical safeguards for children and pets.
How do I apply Clorox® Pool&Spa™ Algaecide and Clarifier to my pool?
For routine weekly prevention, dose the recommended amount based on your pool's gallons, then pour the liquid into the deep end with the filter running. Circulate for at least 8 hours, ideally overnight. For existing algae blooms, dose at the higher labeled rate and brush the affected areas before adding. The Clorox Pool App provides exact dosing for your specific pool size.
How long does it take for the product to clear an algae bloom?
Most early-stage algae blooms clear within 24 to 48 hours of proper dosing with the filter running continuously. Severe blooms may require a second application or a follow-up shock treatment. Use the Clorox Pool App to track results and adjust the next steps.
How often should I use this algaecide for routine prevention?
For most residential pools, weekly application at the maintenance dose keeps water clear and algae-free between regular shock treatments. The Clorox Pool App can send reminders and personalized guidance based on your pool's readings.
Is this product compatible with saltwater pool systems?
Yes. The formula is specifically designed to work in all pool types, including saltwater pools. It does not interfere with salt chlorine generators and is safe to use alongside your existing saltwater system.
Can I use it with chlorine, bromine, or other sanitizers?
Yes. This algaecide is compatible with chlorine, saltwater chlorine, bromine, and most standard residential sanitizers. It is designed to complement your existing sanitizer rather than replace it.
What is included in the box when I order this product?
You receive one 128 fl oz (1 gallon) jug of Clorox® Pool&Spa™ Swimming Pool Algaecide and Clarifier. The label includes full dosing instructions. The Clorox Pool App is a free companion download for iOS and Android that provides personalized testing and dosage recommendations. No additional applicators or equipment are required.
Is this product safe to use around children and pets?
When used at recommended doses in pool water, the formula is safe for residential swimming pools used by families. As with all pool chemicals, store the concentrate jug out of reach of children and pets, and never allow drinking of the undiluted product. Re-entry to the pool is generally allowed shortly after circulation.
Will this product cause foam or residue in my pool?
No. The formula is specifically non-foaming, which means it dissolves cleanly into the water without leaving surface residue. Swimmers can return to the pool quickly without dealing with foam or film.
What is the difference between an algaecide and a clarifier, and does this product do both?
An algaecide kills and prevents algae growth, while a clarifier binds tiny suspended particles so the filter can remove them, improving water clarity. This product is a combination of both, meaning you get algae control and water polishing from a single treatment rather than buying two separate products.

