Astral QL420 Multi-Cartridge Filter

Astral QL420 Multi-Cartridge Filter

  • Recommended Retail Price
$3,265.00
/
Shipping calculated at checkout.
  • Specific manufacturers in the pool industry have guidelines for dealers which do not allow all prices to be advertised online.
  • Free Shipping Sydney Wide
  • Installation & Setup Available
  • Call To Speak To A Professional: 0421 949 949
  • Low stock - 3 items left
  • Backordered, shipping soon

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Astral QL420 Multi-Cartridge Filter

Premium Filtration. Ultra-Low Maintenance. Crystal-Clear Water.

The Astral QL420 Multi-Cartridge Filter is the ultimate choice for pool owners seeking high-performance water clarity with minimal maintenance. Designed for Australian conditions, the QL420 features a large filtration area and four heavy-duty cartridges that trap fine debris with ease—keeping your pool sparkling clean with less effort.

Whether you're running a busy family pool or a tranquil backyard oasis, the QL420 delivers powerful, energy-efficient filtration while reducing water consumption compared to traditional sand filters.

Key Features:

  • High-Performance Multi-Cartridge Design
    Four robust filter cartridges provide a massive surface area for improved dirt and debris capture.

  • Low Water Usage
    No backwashing required—save thousands of litres of water per year.

  • Simple Maintenance
    Quick access clamp lid and easy-to-remove cartridges for fast, hassle-free cleaning.

  • Durable, UV-Resistant Construction
    Built to withstand Australia’s harsh weather and pool conditions.

  • Low Running Costs
    Pairs well with energy-efficient pumps to reduce your power bill without compromising performance.

Perfect For:

  • Medium to large residential pools

  • Pools requiring superior water clarity

  • Eco-conscious pool owners wanting to reduce water waste

Specifications:

  • Filter Area: 39.5 ft² (3.67 m²)

  • Max Flow Rate: 420 LPM

  • Max Operating Pressure: 350 kPa

  • Inlet/Outlet: 50mm

  • Warranty: 5 Years (tank), 1 Year (cartridges & internals)

Looking for a complete pool system upgrade? Ask The Pool Lab about pairing the QL420 with a variable-speed pump or a chlorination system for maximum water quality and energy efficiency.

    Live in Sydney?

    FREE DELIVERY SYDNEY Wide

    We’re offering FREE DELIVERY on all orders over $100, straight to your door. No hidden fees, no extra costs—just fast, hassle-free service!

    Shop Now

    Expertise you can trust

    With years of hands-on experience in the pool industry, our team brings unmatched technical knowledge to every job.

    Service That goes beyond the surface

    Prompt, reliable, and friendly communication. Transparent quotes with no upsell pressure.

    quality without compromise

    Premium equipment and products from trusted brands that deliver long-term results that save you time, money, and headaches.

    Trending Categories 🔥

    Electric Heat Pumps
    Electric Heat Pumps
    Pool Pumps (Variable-Speed)
    Energy Efficient Pumps
    Sunlover Oasis Pool Equipment
    Oasis Equipment
    Freshwater Pool Systems
    Freshwater Systems
    Robotic Pool Cleaners
    Robotic Pool Cleaners

    Free installation on all oasis pool equipment

    Purchase any Sunlover Oasis branded pump, filter, chlorinator or heater and receive free installation.
    Shop Now

    Customer Satisfaction at Our Core

    Customer satisfaction isn't just a goal — it's the foundation of everything we do. From your first call to the final poolside result, we prioritise clear communication, quality workmanship, and reliable service. We’re committed to delivering a seamless, stress-free experience that leaves every customer confident and satisfied.

    💦 What Our Happy Pool Owners Say! 💦

    ★★★★★

    My clients & I couldn’t be happier with the service from Joe at The Pool Lab. Highly recommend & always available, his quality of work is top notch & you will not be disappointed.

    Nick Begetis - Begetis Estate Agents
    Enfield
    ★★★★★

    You will never go past Joe for his professionalism, courtesy and quality of service. I would never use another pool tech. Support your self employed young people that are doing the right thing by consumers.

    Matthew Cragg
    Auburn
    ★★★★★

    We couldn't be happier with the service from The Pool Lab. Joe looks after our pool regularly and has been absolutely fantastic. He has provided us with great advice on how to keep our pool in top shape, and recently recommended and set up a new Maytronics robotic pool cleaner. Thanks again for everything!

    Roger Alam
    Bardwell Valley
    ★★★★★

    I have been dealing with Joe for a couple of years now. Always does an excellent job. Very responsive and very knowledgeable with all things pool related. He is very honest and reliable and I am glad to have found someone I can completely trust to look after my pool.

    Mona Fahmy
    Strathfield South
    ★★★★★

    I’ve had bad experiences with pool service companies in the past, but Joe and The Pool Lab completely changed my mind. They show up on time, communicate clearly, and always do a fantastic job. Whether it’s cleaning or checking the equipment, they handle everything with care and professionalism. Highly recommend their services!

    Rashed Barakat
    Burwood
    ★★★★★

    We couldn’t be happier with the amazing job Joe has done restoring our pool. From the start, he’s been honest, reliable, and always willing to help. His support and advice throughout the process made a big difference. The pool looks great and is finally swimmable again. Highly recommend to anyone looking for someone trustworthy and knowledgeable. Thanks again for everything!

    Patrick Abu
    Roselands
    ★★★★★

    Joe from Pool Lab is trustworthy, reliable, and does a fantastic job maintaining our pool. We’re on a monthly service plan and it’s such a relief to leave everything in Joe’s capable hands. He takes care of it all without fuss. The pool is always in great shape thanks to his consistent and thorough work. I highly recommend Pool Lab for all your pool maintenance and repair needs.

    Venetia Maher
    Croydon
    ★★★★★

    We are really happy with Joe and The Pool Lab. Super knowledgeable and friendly, offers good options and solutions and our pool is looking better than ever. Highly recommend!

    Lewis Tulley
    Marrickville
    ★★★★★

    Joe and The Pool Lab have been looking after our pool for a while now, and it’s never looked better. Their attention to detail, reliability, and friendly service make all the difference. Highly recommend!

    Gordana Skarzynski
    Strathfield

    You may also like

    Recently viewed