Description
Control algae and support clearer pool water in one step
Poolife Defend+ Algaecide combines algae control with a built-in clarifier to help keep pool water clear. Its non-foaming formula treats green, black and mustard algae and is designed for weekly maintenance as well as an initial treatment.
The 32 fl oz bottle is a single-size option for initial algae treatment and ongoing weekly maintenance. Dose according to pool volume and the product directions.
Treat algae and help prevent its return
Defend+ is formulated to control green, black and mustard algae. The product can be used for an initial treatment and continued weekly to help prevent algae outbreaks.
Add clarifying support to your routine
The dual-function formula combines algaecide with a clarifier to improve water clarity. The clarifier also helps filter out fine particles.
Non-foaming and compatible with pool systems
The non-foaming formula is described as suitable for all pool types and compatible with chlorine, bromine, saltwater and Cal Hypo systems. It is also Step 3 of the Poolife MPT Extra System.
Simple application for weekly maintenance
Shake well, then pour the product into the pool near return inlets while the pump is running. For best results, distribute it evenly and use the stated maintenance dose weekly.
Key Features and Benefits
- Dual-action formulaCombines algae control with a built-in clarifier to support clearer water.
- Broad algae controlTreats green, black and mustard algae.
- Non-foamingDesigned for use without bubbles or surface residue.
- Pool-system compatibilityCompatible with chlorine, bromine, saltwater and Cal Hypo systems.
- Weekly maintenanceUse the maintenance dose weekly during swim season or when algae risk is high.
- MPT Extra System fitServes as Step 3 of the Poolife MPT Extra System.
Product Details
| Product Detail | Information |
|---|---|
| Brand | Poolife™ |
| Product Name | Defend+ Algaecide with Clarifier |
| Size | 1 qt (32 fl oz) |
| Manufacturer SKU | 62076 |
| UPC | 073187620767 |
| For Use In | Swimming pools |
| Product Type | Algaecide and water clarifier |
| Form | Liquid, non-foaming |
| Active Ingredient(s) | 20% polyquat + clarifier; the clarifier composition is Not specified in reviewed product details |
| Dosage | Initial: 10 fl. oz. per 10,000 gallons. Weekly maintenance: 6 fl. oz. per 10,000 gallons. |
| Treats/Coverage | Not specified in reviewed product details |
| Stabilized (CYA) | Not specified in reviewed product details |
| Wait to Swim | The FAQ says swimming can resume immediately after application. After shocking, wait until chlorine is 1–4 ppm before applying Defend+. |
| Compatible With | Chlorine, bromine, saltwater and Cal Hypo systems; all pool types. Step 3 of the Poolife MPT Extra System. |
| Storage | Store in a cool, dry place away from sunlight. Keep the container tightly sealed when not in use. |
| Hazard/Shipping Class | Not specified in reviewed product details |
| Shipping Weight | About 2.4 lb |
How to Use
- Shake well: Shake the product well before use.
- Run the pump: Apply while the pool pump is running.
- Add near return inlets: Pour the product directly into the pool near the return inlets.
- Distribute evenly: For best results, spread the product evenly across the pool.
- Use the initial dose when treating: Use 10 fl. oz. per 10,000 gallons of pool water for the initial dose.
- Continue weekly maintenance: Use 6 fl. oz. per 10,000 gallons weekly. For active algae outbreaks, brush affected areas and run the pump continuously for at least 4 hours.
Important Compatibility and Safety Notes
Pool System and Surface Compatibility
Poolife Defend+ is compatible with chlorine, bromine, saltwater and Cal Hypo systems, and is identified as Step 3 of the Poolife MPT Extra System. The product is described as suitable for all pool types and surfaces, including vinyl, plaster, fiberglass and painted finishes. Do not mix it with other chemicals. After shocking, wait until chlorine levels return to 1–4 ppm before applying.
Safety First
Store in a cool, dry place away from sunlight and keep the container tightly sealed when not in use. Do not mix with other chemicals. Keep out of reach of children and pets, and always read and follow the full label directions and precautions on your container.
Why Choose Poolife Defend+?
Poolife Defend+ combines algaecide and clarifier in one non-foaming liquid formula. It treats green, black and mustard algae while helping improve water clarity, with compatibility across several common pool sanitizing systems.
Ideal For
- Pool owners treating green, black or mustard algae
- Pool owners seeking a weekly algaecide maintenance product
- People who want algaecide and clarifier in one product
- Pools using chlorine, bromine, saltwater or Cal Hypo systems
- Users of the Poolife MPT Extra System
Frequently Asked Questions
What types of algae does Poolife Defend+ treat?
It is formulated to treat green, black and mustard algae. Weekly use is recommended to help prevent outbreaks.
Can I use Defend+ with my pool sanitizer?
Yes. It is compatible with chlorine, bromine, saltwater and Cal Hypo systems.
How much should I use for an initial treatment?
The initial dose is 10 fl. oz. per 10,000 gallons of pool water.
What is the weekly maintenance dose?
Use 6 fl. oz. per 10,000 gallons weekly. Continue during swim season or when algae risk is high.
Can I swim immediately after applying Defend+?
The product FAQ says swimming can resume immediately after application. After shocking, wait until chlorine levels return to 1–4 ppm before applying Defend+.
Can Defend+ be used on vinyl or fiberglass pools?
The product is described as safe for vinyl, plaster, fiberglass and painted finishes.
Does Defend+ change pool pH?
The product FAQ describes the formula as pH-neutral and says it will not disrupt water balance.
How should I apply Defend+?
Shake well and pour it into the pool near return inlets while the pump is running. For best results, distribute it evenly.