Kill Algae Fast.
Get 2 Jars for the Price of 1.
Professional-strength, non-staining formula. Kill and prevent every type of algae for up to 3 months. Stock up now before the offer ends.
Water TechniX Algaecide — 1L
That's 2 jars for the price of 1
★★★★★ Trusted by 400,000+ Aussie pool owners
Autumn is the best time to treat. Cooler water slows algae but doesn't stop it. A preventative dose now means a clean pool when spring arrives — no expensive rescue treatments needed.
Free jar automatically added to cart when you click above.
- Best Value in Australia: 2 jars for the price of 1. Stock up for the full season.
- Non-Staining Guaranteed: Chelated formula kills algae without marking surfaces.
- 3-Month Protection: Each 1L dose prevents regrowth for up to 90 days.
- All Pool Types: Safe for salt, magnesium, chlorine, and naked systems.
What Causes Algae in Pools?
Algae thrives on sunlight, warm water, and nutrients. If chlorine drops or pH drifts, a bloom can appear in hours. To fix it, you need to kill the organism and remove its food source.
Free chlorine below 1.0ppm leaves your pool unprotected. Any algae spore that lands has room to grow.
Phosphates are algae's food source. Removing them with a phosphate remover makes your algaecide 2x more effective.
Incorrect pH renders your sanitiser and algaecide less effective. Keep pH between 7.2 and 7.6 at all times.
One Algaecide. Every Type.
Water TechniX Algaecide is rated for all three algae types — treatment and prevention.
Green Algae
Floating green clouds or slippery walls. Our algaecide destroys these blooms on contact and provides 3 months of prevention.
Water TechniX Algaecide ✓Mustard Algae
Chlorine-resistant yellow dust. This high-potency formula is specifically rated for mustard algae where chlorine alone fails.
Water TechniX Algaecide ✓Black Spot Algae
Stubborn dark dots rooted into surfaces. Requires heavy brushing alongside algaecide treatment.
View Black Spot Guide →Clear Water in 6 Steps
Follow our guide to remove algae fast and keep it gone.
Brush Thoroughly
Break the algae's protective slime layer by brushing walls and floor vigorously.
Balance pH
Ensure pH is 7.2–7.6 for maximum algaecide effectiveness.
Dose Pool
Pour 1L per 50,000L around the edges with the pump running.
Run Filter
Run pump and filter for 24 hours to circulate the formula throughout the water.
Clarify Water
Use a clarifier to bind dead algae particles and restore sparkle.
Stock Up
With the BOGO deal, keep your second jar for maintenance doses every 3 months.
Water TechniX vs Generic Algaecide
| Feature | Water TechniX Algaecide | Generic Brand |
|---|---|---|
| Non-Staining Formula | ✓ | ✗ |
| Kills All 3 Algae Types | ✓ | Green only |
| 3-Month Protection | ✓ | ✗ |
| Non-Foaming | ✓ | Often foams |
| Australian Made | ✓ | ✗ |
| BOGO Value | ✓ | ✗ |
Formulated by Pool Chemists
Designed specifically for Australian water conditions
Trusted by Pool Professionals
The same formula used by pool service technicians across Australia
Expert Support Included
Call 1300 511 901 or email — our pool experts answer every question
What Aussie Pool Owners Say
"My pool was pea-soup green. Poured this in, brushed it, and by the next morning it was clear again. Best algaecide I've used."
Sarah B. — Perth WA
"Shifted mustard algae that chlorine couldn't touch. And it didn't mark my liner at all. Highly recommend."
Jason L. — Gold Coast QLD
"The 3-month protection is the real deal. Usually I'm adding chemicals every week, but this has kept my water sparkling with zero effort."
Amanda W. — Sydney NSW
Essential Algae-Fighting Partners
Remove algae today, keep it away tomorrow.
Water Clarifier 1L
Clears cloudy water after treatment. Binds dead algae particles for easy filtration.
$29.99
Phosphate Remover 1L
Starve the algae. Remove phosphates weekly to prevent regrowth and make algaecide 2x more effective.
$39.99
Algaecide FAQs
When you add one Water TechniX Algaecide jar to your cart, a second jar will be auto-added for free. You only pay for one but receive two. Best way to stock up for peak swim season.
Green algae, mustard/yellow algae, and black spot algae. Water TechniX Algaecide provides rescue treatment for active blooms and 3 months of prevention against all types.
Three steps: maintain free chlorine at 1.5–3.0ppm, use a phosphate remover weekly to starve the algae, and add a maintenance dose of algaecide every 3 months. With the BOGO deal, your second jar covers the entire next treatment cycle.
Yes. Unlike old copper algaecides, Water TechniX uses a chelated formula that keeps the active copper locked in solution so it won't mark or plate out on your pool walls or equipment.
Stock Up While the BOGO Offer Lasts.
Don't miss out on Australia's best algaecide value. Order now for same-day dispatch. Offer ends when stock runs out.
🍂 Why treat now? Autumn is the ideal window — algae slows down but phosphates and spores are still present. One preventative dose now costs a fraction of a green pool rescue in spring. With the BOGO deal, your second jar covers next season's maintenance dose too.
Water TechniX Algaecide 1L
$39.99