Poolife™ Defend+™ Algaecide
Black Algae Killer for Treating Pool Algae
This powerful, multi-functional black algae killer formula combines a non-foaming polyquat algaecide with a built-in clarifier to treat and prevent green, black and mustard algae and improve water clarity. Fast-acting and swim-safe, Poolife™ Defend+™ works with any pool care system, including the Poolife™ MPT Extra System.
All-in-One Algae Control and Water Clarifier for a Clear, Healthy Pool
- Dual-Action Formula: Kills algae and improves water clarity
- Non-Foaming: Safe for all pool types, with no bubbles or surface residue
- Fast-Acting: Works immediately — no waiting to swim
- Broad-Spectrum Algae Control: Destroys green, black and mustard algae
- Compatibility: Step 3 of the Poolife™ MPT Extra System or with any sanitizer
Poolife™ Defend+™ Algaecide
- All-in-one solution that ensures your water stays clear, clean and inviting
Additional Information
How To Use Poolife™ Defend+™ Algaecide
Application Instructions
- Shake well before use
- Pour directly into the pool near return inlets while the pump is running
- For best results, distribute evenly across the pool
- Use weekly to maintain crystal clear, algae-free water
Dosage Guidelines
- Initial Dose: 10 fl. oz. per 10,000 gallons of pool water
- Weekly Maintenance Dose: 6 fl. oz. per 10,000 gallons
- Continue weekly use during the swim season or when algae risk is high
Frequently Asked Questions
Q: What makes Poolife™ Defend+™ different from other algaecides?
A: It’s a dual-function product—combining algae prevention with a clarifier to improve water clarity and filtration. It also works without foaming, making it ideal for all pool types.
Q: Can I use this product with my chlorine or bromine system?
A: Yes. Defend+™ is compatible with chlorine, bromine, saltwater and Cal Hypo pool systems.
Q: Is it safe to swim after using this algaecide?
A: Absolutely. The product is non-foaming and fast-acting, so swimming can resume immediately after application.
Q: What types of algae does this control?
A: It’s effective against green, black and mustard algae. Regular weekly use helps prevent outbreaks.
Q: Can I use Poolife™ Defend+™ Algaecide as a standalone treatment for an algae bloom?
A: Yes. For active algae outbreaks, start with the initial dose of 10 fl. oz. per 10,000 gallons. Brush affected areas, run the pump continuously for at least 4 hours and continue weekly treatments to prevent recurrence.
Q: Will it affect my pool’s pH or water balance?
A: No. Poolife™ Defend+™ is a pH-neutral formula, meaning it won’t disrupt your water balance or require additional adjustment after use.
Q: Can I use this in a vinyl-lined or fiberglass pool?
A: Absolutely. The non-foaming, non-staining formula is safe for all pool surfaces — including vinyl, plaster, fiberglass and painted finishes.
Q: How soon should I apply it after shocking my pool?
A: Wait until chlorine levels return to 1–4 ppm after shocking, then apply Defend+™ as directed. This ensures maximum effectiveness without degrading the product.
Benefits of Weekly Algaecide Use
Health & Safety
- Helps prevent slippery surfaces caused by algae growth
- Protects swimmers from harmful contaminants and bacteria that thrive in algae
Water Quality
- Keeps water sparkling and visibly clean
- Clarifier improves filter efficiency by removing fine particles
Convenience
- Combines two pool care steps in one product
Saves time, reduces chemical clutter and streamlines weekly maintenance
Pool Chemical Specifications
- Active Ingredients: 20% Polyquat + Clarifier
- Function: Algaecide and water clarifier
- Formula Type: Liquid, non-foaming
- Pool Compatibility: All pool types and sanitizing systems
- System Fit: Step 3 of the Poolife™ MPT Extra System
Storage and Safety Guidelines
- Store in a cool, dry place away from sunlight
- Keep container tightly sealed when not in use
- Do not mix with other chemicals
- Always follow label instructions for use and dosage
- Keep out of reach of children and pets