You’ve decided to build a pool – congratulations! While you’re likely picturing yourself relaxing on a tanning ledge or swimming laps in a sleek design, most new pool owners miss a critical detail: the pool filtration system.
At Blue Haven, countless excited clients focus exclusively on aesthetics, but very few have read up on filtration systems beforehand. During concept planning, deciding on the wrong pool filter only leads to filter replacements, which can cost you thousands. Here’s how Blue Haven helps new pool owners get it right.
Key Decisions for an Effective Pool Filtration System
Have you ever seen a gorgeous glass window pool with murky water? That’s what happens when filtration gets treated as optional equipment rather than a core component.
Our pool specialists now insist on filtration planning during initial design consultations. This approach aligns with guidance from NSW Health, which outlines that filtration systems must be correctly sized, maintained, and designed to ensure adequate water turnover and clarity – essential for safe and hygienic pool operation (NSW Health, 2023).
Matching Filtration to Your Pool Design
While you’re busy choosing the design, layout, and features of your pool, you might not know that these choices also affect how your filtration system performs. Water flow isn’t just about volume – it’s shaped by every curve, ledge, and wall. At Blue Haven, we address filtration right from the start of your consultation to make sure it suits the design, not just the pool size.
Some of the key design factors we consider include:
Deep ends and narrow zones
These often become dead spots where debris collects. To avoid this, we may recommend extra return jets or larger filters to help maintain steady circulation throughout the pool.
Water features and spillovers
Elements like raised walls or scuppers can interrupt flow between sections. Filtration must be mapped to support these connections and maintain clarity at all times.
Shallow areas
Steps, benches and tanning ledges heat up faster and attract more organic material. Finer filtration helps keep these zones clean, especially during peak summer use.
Freeform or geometric shapes
Irregular outlines often disrupt natural water movement. We plan jet placement carefully to avoid stagnant patches in corners or along curves.
Limited equipment space
On smaller blocks, compact cartridge systems provide the performance you need without requiring extra access or clearance.
Getting Your Filter Size Right
Premade pool kits often come with inadequate filtration that can’t handle Australian conditions. Within months, pool owners face recurring algae problems and inefficient water circulation.
Here’s the calculation our technical team uses for every pool:
A medium lap pool measuring 10m × 2.5m × 1.5m holds 37,500 litres of water. The Australian standard requires your entire pool volume to cycle through filtration every 8 hours. That’s 4,688 litres per hour or 78 litres per minute.
Choosing a filter rated below the required flow rate means constantly battling water quality issues. Selecting one significantly larger creates excessive suction and wastes electricity.
Sand Filters: The Backbone of Australian Pool Filtration
How Sand Filters Work
“Why does my pressure gauge keep climbing?” That’s the most common question from new sand filter owners.
Inside a sand filter sits a bed of specially graded silica or glass media. Pool water enters the top, pushes through this dense sand layer, and leaves dirt behind. Water struggles to pass through as the sand traps more debris – hence the rising pressure gauge. At a certain point (usually 8-10 psi above starting pressure), the valve switches to a “backwash” position, reversing the flow and flushing trapped dirt to waste.
Sand filtration technology hasn’t changed significantly in decades, but today’s glass media upgrades capture particles half the size of traditional sand – down to 20 microns versus the older 40-50 micron standard.
Why Sand Filters Remain Popular for Concrete Pools
Sand filters continue to outsell cartridge models for concrete pools for several key reasons:
- Lower initial purchase cost
- Excellent durability in harsh Australian sunlight
- Perfect fit under decking where vertical space is limited
- Ability to process heavy debris loads from eucalyptus trees and coastal winds
The trade-offs include water wastage during backwashing, less efficient filtration compared to cartridge systems, and the need for dedicated waste plumbing. Frequent backwashing can also disrupt water chemistry.
For most of our concrete pool installation, we recommend sand filters when clients prioritise ease of maintenance and have sufficient water availability, particularly for pools over 60,000 litres.
Cartridge Filters: Superior Filtration Technology
What Makes Cartridge Filters Different
Over the years, the Blue Haven team has converted many sand filter owners to cartridge systems, with very few switching back. The reason? The pleated polyester fabric in a cartridge filter offers substantially more surface area than a sand bed of the same size.
This extensive filtration area traps particles down to 10-15 microns – roughly half the size that even glass media sand filters can catch. Compared to sand filters, cartridge systems never need backwashing; instead, the element is removed periodically during swim season and cleaned with a garden hose.
The newest cartridge materials incorporate antimicrobial coatings that actively fight bacteria and algae between cleanings. While these don’t replace proper sanitiser levels, they help maintain water clarity during heavy use periods.
Why Glass Window Pool Installations Demand Cartridge Filtration
Cartridge filters are the only recommended option for the stunning glass wall pools that have become a signature design at Blue Haven. The exceptional clarity these pools demand simply can’t be achieved with sand filtration.
Beyond clarity, there’s also the water-saving factor – no backwashing means no regular water wastage. Energy efficiency improves, too, as cartridge systems operate at a lower pressure than sand filters, requiring less pump effort. Many pool owners also report using fewer chemicals since better mechanical filtration reduces chemical dependency.
The downsides include higher initial cost, periodic replacement of cartridge elements, and installation limitations since they require clearance above for cartridge removal.
Multi Cyclone Technology: The Filtration Game-Changer
Our installation team consistently notices the difference when pools include Multi Cyclone pre-filtration technology. This breakthrough system has transformed routine maintenance for Australian pool owners.
How Multi Cyclone Creates Cleaner Water
Picture multiple tiny tornadoes working simultaneously inside a clear chamber. That’s essentially what happens in a Multi Cyclone pre-filter. Pool water enters each mini-cyclone at an angle, creating intense spinning that flings heavier dirt particles outward while clean water flows upward to the main filter. The dirt collects in a visible chamber at the bottom, where it can be flushed with minimal water—a fraction of what backwashing wastes.
What makes this truly impressive? The system has no moving parts, no filter media to replace, and nothing that wears out or breaks down.
The Real Benefits of Multi-Cyclone Technology
Adding Multi Cyclone technology to an existing filter reduces sand filter backwashing frequency and significantly extends cartridge cleaning intervals. Also, water usage drops measurably. The pressure gauge on the main filter rises much more slowly, indicating extended periods between maintenance.
This technology has been a genuine breakthrough for busy families who prefer swimming to constant pool maintenance. The initial investment typically recoups through reduced water consumption, decreased chemical requirements, and substantially extended life of the main filter media.
FAQs About Pool Filtration
When clients visit our showroom on 68 Hume Highway Lansvale, these questions come up most frequently:
Where should pool equipment be located?
Sand filters take up more ground area but fit neatly under low decks and overhangs. Cartridge units have a compact footprint but need overhead room to remove the filter element. Your available pump location might settle the decision before water quality concerns even come into play.
How do water restrictions affect filter choice?
With water restrictions becoming stricter across NSW, your filter choice directly impacts your ongoing compliance. Sydney Water’s pool maintenance research reveals that typical backwashing can use hundreds of litres weekly (Sydney Water, 2023).
Does swimming frequency affect filter selection?
Daily swimmers, through winter, benefit from the superior water clarity of cartridge filtration. Seasonal summer-only users often find sand filters more economical since their cleaning schedule aligns with typical swimming patterns.
Essential Maintenance Tips for Your Pool Filtration System
After installing hundreds of filtration systems, the Blue Haven team has identified several common maintenance mistakes. Here’s what every pool owner should know:
- Monitor pressure gauge readings consistently – note the “clean” reading when first starting the system and clean or backwash when pressure rises 8-10 psi
- Establish a regular weekly maintenance routine to check skimmer baskets, empty the pump strainer, and listen for unusual noises
- Run the filter no less than 8 hours daily during swim season, even when the water appears perfect
- Adapt cleaning frequency to the seasons with more frequent maintenance during peak summer and deep cleaning during winter
Proper filtration isn’t just another component. It’s the foundation of your leisure experience. Plan your pool filtration from the start, and call Blue Haven at 02 9724 0444 or follow us on Instagram @bluehavenpools_) to see our latest projects.
