A green pool usually means algae has taken over after the chlorine level dropped too low, the pump stopped running, or the water chemistry drifted out of range during a hot spell or a holiday away. Green pool recovery cost in Australia typically ranges from A$80 for a mild case you fix yourself with shock chlorine and a good brush, up to A$3,500 or more for a fully neglected pool that needs draining, acid washing and new filter media. Where you land in that range depends on pool size, how long the water has been green, and whether you do the work yourself or call a pool tradie.
This guide breaks down real cost ranges by pool size and severity, explains what actually drives the price up or down, and covers when DIY makes sense versus when a professional visit will save you money in the long run. It also covers what to check before you hire someone, since "pool cleaner" isn't a licensed trade in most Australian states, so knowing what good service looks like matters more than checking a licence number.
Green pool recovery is the process of killing algae, clearing suspended particles, and rebalancing water chemistry so a pool is safe to swim in again, and it happens because algae spores are already present in outdoor pool water waiting for the right conditions to bloom. Chlorine normally keeps algae in check, but once free chlorine drops near zero — after a pump failure, a run of 30°C-plus days, heavy rain diluting the water, or just two weeks without testing while the family's on holiday — algae multiplies fast and turns the water green, grey or black within days.
The colour tells you roughly what you're dealing with. Pale or yellow-green water usually means early-stage mustard or green algae sitting in the water column, which most pool owners in Australia can clear themselves with shock chlorine over a weekend. Dark green, grey or black water, especially with algae visibly clinging to the pool walls or steps, means the bloom has been established for longer and often needs professional-strength treatment, extra filtration time, and sometimes acid washing to get the surface clean again.
Leaving a green pool untreated doesn't just look bad. Algae consumes chlorine and raises pH, which lets calcium and metals in the water start staining pool tiles, concrete and vinyl liners, and a heavily loaded filter can clog and strain the pump motor. The longer a pool sits green, the more the eventual recovery costs, because chemical demand and equipment wear both increase with time.
Pump or filter failure is the most common trigger, since Australian summers push chlorine demand up fast and a day or two without circulation is often enough to start a bloom. Other frequent causes include low or expired stabiliser (cyanuric acid) letting UV burn off chlorine too quickly, heavy rainfall diluting chlorine levels, overloaded bather numbers over the Christmas–January period, and pool owners returning from holidays to find the chemical levels have drifted for a week or more.
Green pool recovery cost in Australia typically falls between A$80 for a DIY mild case and A$3,500-plus for a full drain-and-acid-wash on a badly neglected pool, with most professional callouts for a moderately green residential pool landing between A$250 and A$600. The biggest cost drivers are pool volume (measured in litres), how long the algae has been established, and whether the pool needs a full drain or can be recovered while full.
For context, a standard suburban in-ground pool holds roughly 40,000 to 50,000 litres, while a larger family pool or one with a spa attachment can hold 60,000 to 80,000 litres or more — and chemical dosing is calculated per litre, so bigger pools cost more to treat at every stage of recovery.
For a small-to-medium pool (30,000–45,000L) with mild, recently-turned green water, expect A$80–A$200 in chemicals for a DIY shock-and-filter approach, or A$250–A$400 for a single professional visit including water testing, dosing and a filter clean.
For a medium-to-large pool (45,000–70,000L) with established green or grey water, budget A$400–A$800 for professional treatment, which often spans two to three visits over 5–10 days to let the filter cycle through the dead algae without clouding the water again.
For a badly neglected pool with black algae, heavy staining, or water that's been green for months, a full drain, acid wash and refill typically costs A$1,200–A$3,500, depending on pool size, surface type (pebblecrete and quartz cost more to acid wash than plain concrete or fibreglass) and site access for the drain and refill trucks.
Water refill cost is easy to forget and varies by suburb and water authority, typically adding A$150–A$450 for mains water on a standard pool, or more if a water delivery tanker is needed for remote properties. If neglect has damaged equipment, a replacement pool pump installed typically costs A$600–A$1,500, and new sand or cartridge filter media runs A$150–A$350. Any faulty pool wiring or a pump that needs rewiring must be handled by a licensed electrician under state electrical safety rules — this isn't optional and isn't something a general pool technician can legally do.
DIY green pool recovery works well for mild, recently-green water and costs a fraction of a professional callout, but it demands daily testing and patience over several days. A typical DIY approach for a mild case involves shocking the pool with granular or liquid chlorine at 2–3 times the normal dose, running the pump continuously (not on a timer) for 24–48 hours, brushing the walls and floor daily to stop algae reattaching, and backwashing or cleaning the filter once the water turns cloudy blue-white before it clears completely — the whole cycle usually takes 3–7 days and A$80–A$200 in chemicals.
Hiring a pool tradie makes more sense once the water is dark green, grey or black, once you can't see the bottom step, or once you've already tried shocking it twice without success. A professional visit typically includes an accurate water test (often digital, more precise than home test strips), a calculated chemical dose matched to your exact pool volume, equipment inspection, and a follow-up visit to fine-tune chlorine and pH once the water clears — which avoids the common DIY mistake of over-shocking and bleaching out a liner or over-dosing algaecide that then foams the pool.
The real cost comparison isn't just dollars spent versus dollars saved. A DIY recovery gone wrong — over-chlorinating, mixing chemicals unsafely, or missing a staining problem underneath the green — can turn a A$150 job into a A$1,000+ professional fix, so factor in your own experience level and how confident you are reading a test kit before deciding.
The price of green pool recovery in Australia moves up or down based on five main factors: pool volume, algae severity and colour, filter type and condition, callout distance, and whether equipment needs repair or replacement alongside the chemical treatment. A tradie quoting a job will usually ask for your pool's litres (check your pool's compliance certificate or filter box for this), how long it's been green, and photos of the water before giving a firm number.
Callout fees vary by state and by how far the technician has to travel — regional and outer-suburban jobs commonly carry a A$20–A$60 travel surcharge on top of the base callout, which is worth asking about upfront so it doesn't appear as a surprise on the invoice. Filter type matters too: a cartridge filter clogged with dead algae may need a full cartridge replacement (A$80–A$250) rather than a simple hose-down, while a sand filter usually just needs extended backwashing, which adds time but not parts cost.
Seasonal timing also affects price indirectly rather than directly — during peak summer (December–February) pool technicians in most Australian cities are booked out further in advance, so a green pool left untreated for an extra week while waiting for an appointment can shift from a mild recovery into a more expensive established-algae job.
Choosing a good pool recovery tradie in Australia comes down to checking their insurance, asking how they price the job, and confirming what's included before they start, since general pool cleaning and chemical treatment isn't a licensed trade in most states the way electrical or plumbing work is. What you should confirm instead is that the business holds current public liability insurance, has an ABN you can look up, and is upfront about whether the quote is a flat fee or hourly plus chemicals.
If the job involves anything beyond chemical treatment — a new pump, rewired equipment, or structural repairs to the pool shell — that work does fall under state licensing rules. Electrical work must be done by a licensed electrician, and any building or resurfacing work should be handled by a licensed builder registered with your state's licensing body, such as the QBCC in Queensland, the VBA in Victoria, NSW Fair Trading, Building and Energy in WA, or CBS in South Australia.
Getting two or three quotes before booking is the simplest way to avoid overpaying, since prices for the same green pool can vary by A$100–A$300 between operators depending on how busy they are and how they price chemicals. When comparing quotes, ask each tradie for the same three things: pool volume they've costed against, number of visits included, and whether a final balance-and-clear check is part of the price or billed separately.
Ask whether the quote includes multiple visits or just the first treatment, whether chemicals are charged at cost or marked up, what happens if the pool doesn't clear after the first round of shock treatment, and whether they carry public liability insurance you can sight a certificate for.
How Much Does Green Pool Recovery Cost in Australia? (2026 Guide) — common questions
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