Crystal Clear Water,
Guaranteed.
Filter prices drop in autumn as pool season winds down — it's the smartest time to replace or stock up. Water TechniX cartridges at their lowest ever price, with same-day dispatch.
Fix Cloudy Pool Water in 24 Hours
A cloudy pool is often a sign of a clogged, inefficient filter. See how a new Water TechniX cartridge restores crystal clarity — fast.
Unmatched Water Clarity
Advanced pleated design and high-grade media capture more dirt, debris, and microscopic particles — leaving your pool sparkling clean.
Heavy-Duty Durability
Reinforced antimicrobial end caps and a high-strength core resist cracking and collapse — lasting season after season.
Easy to Clean & Reuse
High-quality fabric releases dirt easily during cleaning — reducing your workload and extending cartridge life. Less time cleaning, more time swimming.
Our Best-Selling Cartridges
Chosen by pool owners across Australia for reliability, fit, and performance.
Astral Hurlcon ZX150 — Water TechniX Element
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Astral Hurlcon ZX100 — Water TechniX Element
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Astral Hurlcon ZX250 — Water TechniX Element
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Waterco Trimline CC100 — Water TechniX Element
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Waterco Opal 180 — Water TechniX Element
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Astral Hurlcon ZX200 — Water TechniX Element
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Waterco Trimline CC75 — Water TechniX Element
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Astral Hurlcon QX100 — Water TechniX Element
View Product →Not Sure Which Cartridge You Need?
Answer a few quick questions and we'll point you straight to the perfect replacement for your filter.
Two Levels of Clean
All our cartridges deliver crystal clear water. Choose the level of protection that's right for your family.
Water TechniX Classic
Replacement Cartridge
The original Water TechniX cartridge — exceptional clarity and robust performance for any pool.
- Superior Filtration: High-grade media captures fine debris for sparkling water.
- Heavy-Duty Core: Resists cracking and collapse for long-lasting performance.
- Easy Cleaning: Quality fabric releases dirt easily, saving you time.
Water TechniX Premium
Antimicrobial Cartridge
Everything in Classic, plus advanced protection against bacteria — for the purest water possible.
- Includes all Classic features, PLUS:
- Inhibits Bacteria Growth: Actively fights bacteria, mold, and mildew on the cartridge.
- Healthier Water: Reduces risk of contaminants for safer, cleaner swimming.
- Longer Cartridge Life: Stays cleaner longer by preventing bio-fouling.
What Aussie Pool Owners Say
"Fits the ZX150 perfectly. Pool was cloudy for weeks and within 24 hours of installing this it cleared right up. Much cheaper than the Astral original too."
"Third time buying this. Every time it arrives quickly, fits perfectly, and the pool is crystal clear within a day. Best value cartridge I've found in Australia."
"Upgraded to the Premium antimicrobial version this year and noticed the difference immediately. Pool stays cleaner longer between washes. Worth every cent."
How to Replace Your Filter Cartridge
Get crystal clear water in just a few simple steps. Here's how to do it right.
Turn Off Power
Safety first — turn off all power to your pool pump and filter system at the circuit breaker before starting.
Relieve Pressure
Open the air relief valve on top of the filter tank. Wait until the hissing stops and the pressure gauge reads zero.
Remove Old Filter
Unlock and remove the tank lid, grab the old cartridge handle and pull straight up. Wiggle gently if needed.
Clean Tank & Install New
Rinse the inside of the tank, then slide the new Water TechniX cartridge down firmly onto the manifold.
Reseal & Check
Lube the lid O-ring, replace the lid, turn power on, then slowly open the relief valve to bleed air until a steady stream of water appears. Check for leaks.
Turn Off Power
Safety first — turn off all power to your pool pump and filter system at the circuit breaker. This prevents water from pumping while you work.
Relieve Pressure
Open the air relief valve on top of the filter tank to release built-up pressure. You'll hear a hissing sound. Wait until it stops completely and the pressure gauge reads zero.
Open Tank & Remove Old Filter
Unlock and remove the filter tank lid (clamp, bolts, or threaded ring). Grab the handle of the old cartridge and pull it straight up — wiggle gently if needed.
Clean Tank & Install New Filter
Rinse any loose debris from inside the filter tank. Slide the new Water TechniX cartridge down, seating it firmly on the manifold at the bottom.
Reseal, Repressurize & Check
Clean and lubricate the lid's O-ring before securing the lid. Close the air relief valve. Turn power back on. Once running, slowly open the relief valve to bleed air — close when a steady water stream appears. Check for leaks.
How to Clean Your Filter Cartridge
Extend the life of your filter and keep your water sparkling. Follow these steps and grab the tools for a deep clean.
Thoroughly Rinse (The Right Way)
Using a garden hose with a spray nozzle (do not use a high-pressure washer), work top-down. Hold the nozzle at 45° to spray between the pleats, dislodging trapped dirt. Rotate as you go.
💡 Pro-Tip: Make Rinsing Faster
High Pressure Nozzle
Blast debris in seconds. Attaches to any garden hose.
Waterwand with Brush
8 fan nozzles + brush — scrubs and rinses pleats simultaneously.
Deep Clean (For Oils & Grime)
Every 3–4 months, soak the cartridge overnight in a bucket with a filter cleaning solution. This breaks down stubborn oils, lotions, and mineral buildup that hosing alone can't remove.
Ultimate Filter Care Bundle
Filter Cleaner + Waterwand + Lube — save 20% vs. buying individually.
Filter Cleaner 500g
Soaks deep to remove stubborn oils, grime, and calcium — restoring filter efficiency.
Final Rinse & Reinstall
After soaking, rinse the cartridge thoroughly one more time. Place it back in the filter tank, secure the lid (don't forget to lubricate the O-ring!), turn the power back on, and bleed the air from the tank using the relief valve until a steady stream of water appears, then close it.
Pool Filter Questions, Answered
Cartridge filters are more efficient, trapping particles down to 10–20 microns vs 20–40 microns for sand. They also don't require backwashing, saving thousands of litres of water annually. Many modern pool owners find cartridge filters offer better long-term value, lower energy use, and superior water clarity.
Clean when the pressure gauge rises 8–10 PSI above its normal operating level, or roughly every 3–6 months during swimming season. Rinse with a garden hose to remove debris, then soak overnight in a chemical filter cleaner to break down oils and minerals.
Sizing depends on your pool volume and required turnover rate — always opt for slightly larger than strictly necessary, as bigger filters need less frequent cleaning. A quality Water TechniX cartridge typically lasts 3–5 years with proper regular cleaning.
Turn off the pump. Set the multi-port valve to 'Backwash' and run for 1–2 minutes until the sight glass runs clear. Turn off the pump, set to 'Rinse', run for 30 seconds. Turn off the pump, set back to 'Filter', then resume normal operation. Do this when the pressure gauge rises 8–10 PSI above normal.
Mr Pool Man carries high-quality Water TechniX replacement cartridges for all popular Astral Hurlcon housings including the ZX75, ZX100, ZX150, ZX200, and ZX250. Always confirm the model number on your existing cartridge or filter lid before ordering to ensure a perfect fit.
Both use pleated media for high-quality filtration. The CC100 is physically larger, handles a higher maximum flow rate, and requires less frequent cleaning. Mr Pool Man stocks replacement cartridges for both — always confirm the correct size when ordering.
Likely yes. Over time pleats degrade or become permanently clogged with oils and minerals that even chemical soaking can't fix. If your water is still cloudy after a thorough clean, a replacement cartridge is almost certainly the answer.
Essentials include a chemical filter cleaner solution for deep soaks every 3–4 months, and a high-pressure spray nozzle or Water Wand to efficiently rinse the pleats during routine maintenance. Both are available above on this page.
Ready for a Hassle-Free, Sparkling Pool?
Browse our complete range of high-performance filter cartridges and find the perfect match for your pool today.