Sanitising Above Ground Pools the Easy Way
Above ground pools bring summer fun to Perth backyards without the commitment of an in-ground installation
Above ground pools from brands like Bestway and Intex have become incredibly popular in Perth backyards. They offer an affordable way to beat the summer heat without the significant investment of an in-ground pool. However, many pool owners make a critical mistake when it comes to sanitising these pools—one that can lead to ongoing water quality issues and expensive chemical corrections.
At Poolwise Padbury, we see this problem regularly: cyanuric acid (stabiliser) buildup from floating chlorine tablet dispensers. Let's explore why this happens, why it's particularly problematic for smaller pools, and introduce you to a far superior sanitising solution.
The Hidden Problem with Floating Tablet Dispensers
Most Bestway and Intex pools come with a floating dispenser designed to hold chlorine tablets (also known as trichlor tablets or pucks). While this seems like a convenient "set and forget" solution, there's a significant issue that pool retailers rarely discuss: every single tablet adds cyanuric acid (CYA) to your pool water.
What is Cyanuric Acid?
Cyanuric acid, commonly called "stabiliser" or "conditioner," is a chemical that protects chlorine from being destroyed by ultraviolet (UV) rays from the sun. In outdoor pools, some level of stabiliser is beneficial—it prevents up to 90% of chlorine loss on sunny days.
The problem? Stabiliser doesn't break down, evaporate, or get filtered out. It accumulates continuously with every trichlor tablet you use.
⚠️ The Stabiliser Accumulation Problem
For every 10ppm of chlorine added using trichlor tablets, your cyanuric acid level increases by approximately 6ppm. In a small above ground pool that's treated weekly, stabiliser levels can reach problematic concentrations within just 4-6 weeks of summer use.
Why High Stabiliser is Particularly Dangerous for Small Pools
Above ground pools typically range from 3,000 to 15,000 litres—significantly smaller than in-ground pools which often hold 40,000+ litres. This smaller volume means:
- Faster concentration buildup – Less water means chemicals concentrate more quickly
- Reduced dilution effect – Topping up after evaporation provides minimal dilution
- Chlorine lock occurs sooner – When CYA exceeds 50ppm, chlorine becomes increasingly ineffective
- Expensive partial drains – The only way to reduce stabiliser is to drain and refill with fresh water
The ideal cyanuric acid level is between 30-50ppm. Once levels exceed 80-100ppm, your chlorine essentially stops working effectively—a condition known as "chlorine lock." At this point, you could add massive amounts of chlorine and still struggle to maintain sanitary water.
Maintaining crystal clear water in your above ground pool is easier with the right sanitising approach
Why Traditional Granular Chlorine Isn't the Answer Either
Some pool owners switch to granular chlorine (calcium hypochlorite) to avoid stabiliser buildup. While this does solve the CYA problem, it creates new issues for above ground pool owners:
❌ Vinyl Liner Damage Risk
Traditional granular chlorine can bleach and damage vinyl liners if not pre-dissolved properly. Concentrated granules settling on the pool floor create "hot spots" that permanently stain or weaken the liner material—a costly mistake on a Bestway or Intex pool.
❌ No UV Protection
Without any stabiliser, calcium hypochlorite is rapidly destroyed by sunlight. You may need to dose multiple times per day during summer to maintain adequate chlorine levels.
❌ Calcium Buildup
Cal-hypo adds calcium to your water with every dose. In Perth's already calcium-rich water, this can lead to scaling on pool surfaces and equipment.
The Best Solution: Lo-Chlor Iluka Purify
At Poolwise Padbury, we recommend Iluka Purify by Lo-Chlor as the ideal sanitising solution for above ground pools. This Australian-made product addresses every problem we've discussed while providing additional benefits that make pool maintenance simpler and more enjoyable.
Iluka Purify – The Smart Choice for Above Ground Pools
A concentrated blend of SDIC (stabilised chlorine) and Borax, Iluka Purify is formulated for effective sanitisation across a wide pH range in both hot and cold water applications.
1 teaspoon per 1,000 litres every 48 hours
Why Iluka Purify is Perfect for Bestway & Intex Pools
✅ Vinyl-Safe Formula
Unlike traditional granular chlorine, Iluka Purify will not stain or damage vinyl surfaces. Its gentle formulation dissolves quickly and evenly, eliminating the risk of bleach spots or liner degradation.
✅ Controlled Stabiliser Levels
The small, regular doses mean stabiliser is added gradually and in controlled amounts—preventing the rapid CYA buildup associated with floating tablet dispensers.
✅ Borax Benefits
The inclusion of Borax (Sodium Tetraborate Pentahydrate) provides multiple advantages: it softens the water for a more comfortable swimming experience and helps stabilise pH levels, reducing the need for constant pH adjustments.
✅ Wide pH Range Effectiveness
Iluka Purify works effectively across a broader pH range than standard chlorine products, giving you more flexibility and requiring less precise water balance management.
✅ Australian Made Quality
Lo-Chlor is a 100% Australian-owned company producing specialty pool and spa chemicals. The Iluka range represents their commitment to quality, effective water treatment solutions.
How to Use Iluka Purify in Your Above Ground Pool
Simple Dosing Guide
| Pool Size | Iluka Purify Dose | Frequency |
|---|---|---|
| 3,000 litres (small Intex/Bestway) | 3 teaspoons (approx. 18g) | Every 48 hours |
| 5,000 litres (medium pool) | 5 teaspoons (approx. 30g) | Every 48 hours |
| 8,000 litres (larger frame pool) | 8 teaspoons (approx. 48g) | Every 48 hours |
| 10,000+ litres (large pool) | 10+ teaspoons (60g+) | Every 48 hours |
Application Method:
- Ensure your pool pump is running and filter is operating
- Measure the appropriate dose based on your pool volume
- Sprinkle Iluka Purify directly over the pool surface, distributing as widely as possible
- Allow the pump to run for at least one full cycle to circulate thoroughly
- Repeat every 48 hours for consistent sanitisation
💡 Pro Tip: Don't know your pool size? Most Bestway and Intex pools display the capacity on the box or in the manual. Common sizes include 3,028L (8ft round), 5,377L (10ft round), 7,340L (12ft round), and up to 16,000L+ for larger frame pools.
Upgrade Your Pool Experience with Iluka Bliss
A Luxurious Bathing Experience
For an elevated swimming experience, pair Iluka Purify with Iluka Bliss from the same Lo-Chlor range. This unique mineral blend transforms your above ground pool into a rejuvenating oasis.
Iluka Bliss is produced from a combination of magnesium, potassium, and ocean trace elements—health-promoting minerals sourced from the pristine waters of the Great Australian Bight. These natural ingredients offer remarkable benefits:
- Soothes and nourishes skin and hair
- Relieves aches and pains after a long day
- Relaxes muscles and reduces tension
- May assist with cramps and circulation
- Creates significantly softer water that feels luxurious
Dosage: Add 50ml of Iluka Bliss per 1,000 litres of water weekly, poured around the pool perimeter while the pump is running.
Essential Tips for Above Ground Pool Success
🧪 Test Your Water Regularly
Invest in a quality test kit or bring a water sample to Poolwise Padbury weekly. Key levels to monitor include Free Chlorine (1-3ppm), pH (7.2-7.6), Total Alkalinity (80-120ppm), and Cyanuric Acid (30-50ppm).
🌊 Run Your Pump Adequately
Even small pools need proper circulation. Aim to run your filter pump for at least 6-8 hours daily during summer. This helps distribute sanitiser evenly and allows the filter to remove debris.
🧹 Clean Your Filter Regularly
Bestway and Intex pools typically use cartridge filters that need weekly rinsing and replacement every 2-4 weeks during heavy use. A dirty filter can't sanitise effectively.
☀️ Use a Pool Cover
A solar cover reduces evaporation, keeps debris out, and helps retain heat. It also reduces UV exposure to your pool water, meaning your sanitiser lasts longer.
🚿 Shower Before Swimming
Body oils, sunscreen, and sweat are the biggest contributors to chlorine consumption. A quick rinse before swimming dramatically reduces the sanitiser demand on your pool.
Ready to Transform Your Pool Care Routine?
Visit Poolwise Padbury to pick up Iluka Purify, Iluka Bliss, and everything else you need for crystal-clear, healthy pool water all summer long.
📍 Location: Shop 14, 75 Warburton Avenue, Padbury WA 6025
📞 Phone: (08) 9403 6000
🌐 Online: poolwise.com.au
Bring in a water sample for free professional analysis and personalised recommendations for your above ground pool!
Frequently Asked Questions
Can I switch to Iluka Purify if my stabiliser is already high?
Yes, but you'll first need to address the existing stabiliser level. If your CYA is above 50ppm, we recommend partially draining and refilling your pool with fresh water to bring it back into range. Once stabiliser is corrected, Iluka Purify will maintain appropriate levels without causing further buildup.
Is Iluka Purify safe for my kids and pets?
Absolutely. When used as directed, Iluka Purify maintains safe chlorine levels for swimming. Wait approximately 15-20 minutes after dosing before swimming to allow proper distribution. The borax component actually makes the water feel softer and gentler on skin.
Do I still need to shock my above ground pool?
Occasional shock treatment is still beneficial, especially after heavy use, storms, or if you notice cloudy water. We recommend Iluka Eliminate from the same range—a chlorine-free shock oxidiser that works perfectly with Iluka Purify. It removes contaminants and restores water sparkle without adding more chlorine or stabiliser.
How long will a 1kg tub of Iluka Purify last?
For a typical 5,000-litre Bestway or Intex pool dosed every 48 hours at 30g per dose, a 1kg tub will last approximately 30+ doses—or about 2 months of summer use. Larger pools will go through product faster, while smaller pools will stretch it further.
Can I use Iluka Purify in my spa or swim spa too?
Yes! Iluka Purify was originally designed for spas and hot tubs, making it perfect for swim spas as well. Its effectiveness across a wide pH range and temperature tolerance makes it ideal for heated water applications. The same dosing rate applies—1 teaspoon per 1,000 litres every 48 hours.
This article is brought to you by Poolwise Padbury, your local pool care experts in Perth's northern suburbs. We're passionate about helping you get the most from your backyard pool—whether it's a simple Intex inflatable or a full-sized above ground frame pool.
