Green Pool Treatment and Recovery

Fast, reliable restoration of algae-affected and stagnant swimming pools across Sydney.

RECEIVE YOUR FREE QUOTE

Book Your Green Pool Recovery Today

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Why Is My Pool Green?

The green colour typically comes from algae blooms, which thrive when chlorine levels are low or filtration is inadequate. Left untreated, it can lead to staining, damaged surfaces, and a pool that becomes unsafe to swim in.

Common causes of a green pool include:
Poor water chemistry (low chlorine, incorrect pH or alkalinity)
Broken or underperforming filtration systems
Debris accumulation and lack of circulation
Prolonged neglect or seasonal shutdown
Heavy rain diluting sanitiser levels

At CleanTech Pools, we provide professional green pool treatments that don’t just mask the issue — we diagnose and resolve the root cause, restoring your pool to a clear, swimmable state quickly and safely.

Green Pool Recovery – Your Two Options…

Option 1: Pool Drain & High-Pressure Acid Wash
Procedure
Drain the Pool: Using a high-volume external pump, we fully drain the pool — typically within 6–8 hours.
Manual Debris Removal: All sludge, leaves, and organic buildup are manually cleared to expose the pool surface.
Acid Application: We apply a controlled muriatic acid wash to break down stains, scale, and algae residue.
Rinse & Neutralise: Surfaces are thoroughly rinsed and neutralised to eliminate all acid residue.
High-Pressure Blast: A pressure washer is used to remove any remaining contaminants or buildup.
Repeat if Required: The acid and rinse cycle may be repeated for heavily stained or aged interiors.
Refill with Fresh Water: Once the interior is clean, the pool is refilled with fresh mains water.
Chemical Rebalancing: We precisely adjust pH, chlorine, stabiliser, and other levels to ensure swim-ready water.
Suitability
Green for over 1 month
Water is dark green, brown, or black
Surface staining is visible
Cannot see past the top step
Pool emits an unpleasant odour
Previous chemical treatments have failed
Pool has been shut down over winter or off-season
Contains heavy debris and sludge
Pool has basic or outdated filtration equipment
Benefits
Fast turnaround: Ready in as little as 3 days
Guaranteed algae removal: Eliminates 100% of biological contaminants
Restores surface appearance: Significantly improves look and feel
Independent of filtration: Process does not rely on pool equipment
Prevents recurrence: By removing all algae, the risk of returning blooms is greatly reduced
Renovation-ready: Ideal time to inspect surfaces, replace lights, or perform other repairs
Things to consider
Slightly higher cost due to labour and water refill
Pool must be completely drained for the process to be effective
Weather and water access may affect scheduling
Receive Free Quote
Option 2: Chemical Green Pool Treatment
Best for recent green water issues or mild algae build-up.
This non-invasive method uses shock dosing, flocculants, and filtration adjustments to treat the water without draining your pool.
Suitability
Recently turned green (within 1–2 weeks)
Pools with light to moderate algae blooms
Situations where draining is not practical (e.g. groundwater issues, site access)
Pools where water is green but still partially transparent
Customers seeking a lower-cost solution
Pools with light to moderate algae blooms
Benefits
Slightly cheaper than acid washing
No need to drain your pool
Addresses water chemistry and underlying causes
Things to consideR
Does not remove stains or surface buildup — algae and scale may remain
Results vary depending on equipment quality
Longer treatment timeline (up to 2 weeks) compared to acid wash
Requires a sand filter (not cartridge filter)
Can risk recurrence if not done right
Receive Free Quote

Our Preferred Approach: Why Acid Washing Often Delivers Better Results

While there are two main methods for green pool recovery, at CleanTech Pools, we typically recommend and prefer the full drain and acid wash approach. It delivers a deeper, longer-lasting result and is especially effective for pools that have been neglected or severely affected.

The Team You Can Trust

Why Choose CleanTech Pools?

Fast response times across Sydney
Experienced technicians trained in complex water recovery
Use of commercial-grade chemicals and proven methods
Full transparency with no hidden costs
Optional regular service plans to keep your water crystal clear year-round
300+
Completed Projects
30+
combined years experience
70+
Customer Reviews

Frequently Asked Questions

Feel free to contact us if you have a question that
is not answered here.

Can chlorine clear a green pool?

How do I bring my green pool back to life?

Why did my pool turn green?

How do I recover a pool from algae?

What our customers are saying

"We hired CleanTech Pools to resurface our fibreglass pool last September. What can I say other than how professional their staff were and the pool paint is still tact , they are honest and delivered what they promised, it’s been nearly 1 year and paint looks fantastic. Thank you CleanTech Pools. We highly recommend CleanTech Pools"
Peter S – Greenacre
"Josh and team transformed an old, tired pool into something that's a joy to look at. They were great to work with and helped us to make the right decisions on the project."
Paul B – Edgecliff
"The team at CleanTech pools came out and repaired my pool. Absolute gentlemen and extremely professional. Joe was honest and went above and beyond to ensure I was happy, he made sure we got the best outcome. This company comes highly recommended"
Moe S – Prestons
"These boys are the real deal. They did a full renovation on my 30 year old pool (new interior lining, spa extension, waterline tiling). We are so happy. Thank you CleanTech!"
Dimitri V – Strathfield
"Fast, efficient, professional. I was fortunate enough to have initial dealings with Joe, a quote by Josh and Jack who installed my equipment. Everyone of these 3 were professional, courteous and completed the job quickly and courteously. Please contact these guys for any and all pool inquiries. I highly recommend!"
Michael L – Oakhurst
"The CleanTech team are excellent at "reading the needs" of their clients. We wanted full maintenance support, with some tricky technical needs and upgrades required. Not only did they deliver and install all equipment in full, perfect fit for purpose, they continue to deliver calm, sublte, professional and cheerful maintenance programs allowing us maximum enjoyment with minimal stress. We fully trust them and can recommend to both new and experienced pool owners to bring the joy and sparkle back! (Literally!)"
Tanya P – Wahroonga
"The guys at CleanTech have totally transformed our pool. When we purchased our house the pool was in desperate need of TLC. We had to replace the filter, the cleaner, the pump and wanted to install a heat pump. The boys were able to sort all this out for us at a good price and in a timely matter. On top of all that their platinum pool service ensures our pool is always sparkling clean and functioning at its absolute best. Highly recommend their service."
Ben D – West Ryde
"After 20 years of the same original equipment the pool needed upgrading and CleanTech Pools worked hard to get my pool back to as new. Carl and Joe and the technicians are always polite, punctual, respectful and the job is done well. I would recommend them to you."
Vicki B – Croydon
"When I first put in my pool in back in 2019, I was stressed about servicing my own pool knowing nothing about how to maintain a pool. I exercised the idea of taking it down to the local pool shop which turned out to be a disaster I was spending more money that I absolutely needed too. I was just about to give up until I came across the owners of CleanTech Pools by pure coincidence and came highly recommended. All I can say is that Carl and Josh have been servicing my pool since 2019 and never cease to amaze me about their absolutely competitive pricing, reliability and honesty. The boys are absolute legends to deal with and have a few laughs with too! Keep up the good work boys and love seeing you boys continue to grow! Joe, I wont forget about u too legend!"
Ahmed H – Lakemba
"As an older Australian I find that a lot of tradesmen treat you like an idiot so they can rip you off! These guys were genuine and treated us with respect. From start to finish they kept us informed about every detail. They were always polite on time and cleaned up any mess. Our pool is over 30 years old and was looking really really sad. Josh informed us after the job was finished the pool would look 100 percent better. Well they exceeded our expectations because the pool looks brand new. Can’t thank these guys enough!! They did an awesome job. They deserve 10 stars."
Own & Sandra M – Hinchinbrook
"Joe and the team have always been very professional. Joe was a great help in getting our new pool equipment set up and provided great advice along the way. I would highly recommended CleanTech Pools, they do a great job."
Vivian B – Haberfield