Buy 2 Cartridges,
Get Filter Cleaning Solution FREE
Your filter is the heart of your pool. Replace it now and we'll include the cleaning solution that makes it last 3+ years.
*Automatically added to cart โ $30 value
What brand is your filter housing?
Check the label on your filter tank. Not sure? Match by measurements or get help.
Buy 2 Cartridges, Get Filter Cleaning Solution FREE
Add 2 cartridges and we'll drop in a 500g Filter Cleaning Solution โ $30 free. It's a soak-in powder that dissolves the sunscreen, dirt and body oils hosing alone leaves behind. Without it, even a new cartridge clogs from the inside out.
Left: a season's worth of sunscreen, body oils and gunk. Right: after one overnight soak.
How to use: Mix into a bucket, soak overnight, rinse. That's it. One 500g pack = 6 to 8 deep cleans.
Find Your Filter
Use the quiz at the top of this page to match the exact cartridge for your pool.
Add 2 to Cart
Any 2 cartridges qualify. Free shipping unlocked at $149.
Solution Added FREE
Your $30 Filter Cleaning Solution 500g โ auto-added at checkout. No code needed.
Offer applies when 2+ filter cartridges are in your cart. Limit 5 free cleaning solutions per 10 filters.
Fix Cloudy Pool Water in 24 Hours
A cloudy pool is almost always a clogged, degraded filter. See how a new cartridge restores crystal clarity.
Unmatched Water Clarity
Advanced pleated design filters debris and particles. Delivers consistently clear water your family will love.
Heavy-Duty Durability
Reinforced antimicrobial end caps resist cracking and collapse, season after season.
Easy to Clean & Reuse
High-quality fabric releases dirt easily. Less scrubbing, longer cartridge life, more time swimming.
Should you clean it or replace it?
Cartridges last 3 to 5 years with regular cleaning. If yours is younger and just dirty, a chemical soak will likely fix it. If it's older, cracked, or your pool is still cloudy after a deep clean, it's time to replace.
- Cartridge is under 3 years old
- No visible cracks or torn pleats
- Last cleaned more than 6 months ago
- Cartridge is 3+ years old
- Still cloudy after a chemical soak
- Pressure still runs high after cleaning
- Pleats are torn, collapsed, or brown
Best-Selling Cartridges
Pick any 2 below โ your $30 Filter Cleaning Solution is added at checkout
Classic or Premium โ Either Unlocks Free Cleaning Solution
Buy one Classic + one Premium, or two of the same โ any 2 cartridges unlock your free Filter Cleaning Solution 500g.
Water TechniX Classic
Exceptional clarity and robust performance for any pool.
- Heavy-duty core
- Easy to clean
- Effective 50-micron filtration in real-world conditions
Water TechniX Premium Antimicrobial
Everything in Classic, plus bacteria protection for the purest water.
- All Classic features including effective filtration
- Inhibits bacteria growth
- Longer cartridge life
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."
"Upgraded to the Premium antimicrobial version this year. Pool stays cleaner longer between washes. Worth every cent."
How to Replace Your Filter Cartridge
Turn Off Power
Turn off all power to your pool pump at the circuit breaker.
Relieve Pressure
Open the air relief valve until the gauge reads zero.
Remove Old Filter
Unlock and remove the tank lid, pull cartridge straight up.
Install New Filter
Rinse tank, slide new cartridge down firmly onto manifold.
Reseal & Check
Lube O-ring, replace lid, power on, bleed air, check for leaks.
Turn Off Power
Turn off all power to your pool pump and filter system at the circuit breaker.
Relieve Pressure
Open the air relief valve on top of the filter tank. Wait until hissing stops completely.
Open Tank & Remove Old Filter
Unlock and remove the filter tank lid. Grab the old cartridge handle and pull straight up.
Clean Tank & Install New Filter
Rinse debris from inside the tank. Slide the new cartridge down, seating firmly on the manifold.
Reseal, Repressurize & Check
Lubricate the lid O-ring. Secure lid, close air relief valve, turn power on. Bleed air until steady water appears. Check for leaks.
How to Clean Your Filter Cartridge
The free Filter Cleaning Solution makes this easy. Extend the life of your filter and keep water sparkling.
Thoroughly Rinse
Using a garden hose with spray nozzle (not a pressure washer), work top-down at 45ยฐ between the pleats. Rotate as you go.
Deep Clean with Filter Cleaning Solution (Every 3 to 4 Months)
Soak the cartridge overnight in a bucket with Filter Cleaning Solution. This breaks down stubborn oils, lotions, and minerals that hosing alone won't remove.
What container to use
For most cartridges, a standard 20-litre bucket works perfectly. For taller cartridges (700mm+), use a 60-litre plastic bin with a lid. Soak one end first, then rotate and soak the other end to clean the full length. Always cover with a lid to keep kids and pets safe.
Rinse, Dry and Store
After soaking, rinse the cartridge thoroughly with a garden hose. Let it dry completely in the sun. Once fully dry, store in a garbage bag ready for the next rotation. A dry cartridge won't grow mould or mildew between uses.
When reinstalling, place back in the tank, secure the lid, lubricate the O-ring, power on, and bleed air from the relief valve.
Pool Filter Questions, Answered
Add any 2 filter cartridges to your cart and the Water TechniX Filter Cleaning Solution 500g (RRP $30) is automatically added at $0. Mix and match Classic and Premium โ any combination qualifies. Limit 5 free solutions per 10 filters.
Yes โ any 2 cartridges from our filter cartridge collection qualify, whether same model, one Classic + one Premium, or different sizes.
A quality cartridge typically lasts 3 to 5 years with proper regular cleaning using Filter Cleaning Solution every 3 to 4 months.
Likely yes. Over time pleats degrade or become permanently clogged. If water is still cloudy after a thorough clean, a replacement cartridge is almost certainly the answer.
Buy 2 Cartridges,
Get Filter Cleaning Solution FREE
Replace it once, keep it clean for the next 3+ years. Your $30 Filter Cleaning Solution is included free with any 2 cartridges. Not sure it's the right fit? Send it back within 30 days and we'll swap it for the correct one.