The cheapest pool to own is the one you look after. Stock up on what your pool actually needs from our selected range and we'll add the 4th one free. Simple as that.
Pick any selected chemical. Add 3 of the same to your cart. We add the 4th free at checkout. No codes needed. That's like 25% off every selected chemical in your order, or about $1.40 a day to look after your pool.
Rule: B3G1F applies to 3 of the same selected product. Mix and match doesn't qualify. But you can add multiple sets in one order. Buy 3 Algaecide + 3 Chlorine = 1 free Algaecide + 1 free Chlorine.
Offer applies to 17 selected Water TechniX chemicals. See full qualifying range below.
Shop All Selected ChemicalsBoth B3G1F. Both under 24 hours to see results. Add 3 of either (or both) and stock up.
Rust, iron, leaf, mineral, organic stains. Lifts them in 1 to 2 hours.
Kills black spot algae at the root. Visible results in under 24 hours.
After Stain Remover or Black Spot Remover does the heavy lifting, Oxi Shock clears the mess, softens the water, and gets your pool swim-ready in 15 minutes. Same B3G1F offer applies.
Every product below qualifies for Buy 3 Get 1 Free. Pick any chemical, add 3 to cart, and the 4th is on us.
Our chemical bundles come pre-configured for a specific job - already discounted, always with free extras.
Perfect for new pool owners AND spring reopening - same 7 chemicals, ready to go.
Pool gone green? This bundle clears it in a weekend. 90% of pools clear in 24 hours.
Bundles have their own discount - not part of Buy 3 Get 1 Free. Single-click purchase.
These chemicals aren't part of the current Buy 3 Get 1 Free offer - available individually at their normal price.
Scan the QR code on the pack to open our award-winning free water tester on your phone. It reads your strip, tells you exactly what your pool needs, and lets you add the right chemicals to cart in seconds.
"Stocked up on chlorine when I saw the deal. Saved me a trip to the pool shop and the price was way better. Will be ordering again when I run low."
"The phosphate remover is a game changer. My pool hasn't had algae since I started using it. Grabbed a stack of it and I'm set for the season."
"Finally found a stain remover that actually works on rust stains from bore water. Arrived in 2 days. Proper Australian quality."
Pick any selected chemical. Add 3 of the same one to your cart. We automatically add the 4th free with no code needed. 17 selected chemicals qualify, and you can use it multiple times. Buy 3 Algaecide, get 1 free. Buy 3 Chlorine, get 1 free. Stock up on everything you need.
The offer applies to 17 selected chemicals from our Water TechniX range - all of our top-selling problem solvers, sanitisers, clarifiers and treatment products. A small number of heavier or specialty chemicals aren't part of the current offer - you can find those in the "Also in our range" section below the main offer grid. Bundles (like the New Pool Owner and Green to Clean bundles) have their own bundle discount and are listed separately.
No - the 4th free applies to 3 of the same chemical. So if you buy 3 Stain Removers, you get a 4th Stain Remover free. You can stack multiple sets in one order (3 Stain + 3 Algaecide = 1 free Stain + 1 free Algaecide).
Use our free water tester. It reads a test strip from your phone and tells you exactly what to add. Or, if you're new to pool ownership, our New Pool Owner Guide walks you through everything step by step with product recommendations for your specific pool type.
30-day return policy on unopened products. If you're unsure before ordering, email our support team and we'll help you figure out exactly what you need.
Yes. All orders over $149 ship free Australia-wide. Most metro orders arrive in 1 to 3 business days. Orders before 2pm AEST ship same day.
No codes. No limits. 17 selected chemicals, every order. Free shipping over $149, and this deal usually clears it.
Buy 3 of the same selected chemical, 4th added free at cart. No code needed. 17 qualifying products.
