Start fresh. Remove stains, algae, and buildup at the source.
Some pools reach a point where no amount of shock, algaecide, or scrubbing makes a realdifference. When that happens, the issue is in the water itself — or embedded in the plaster.Pool Pilots helps Scottsdale homeowners reset their pool the right way, with professionaldraining and the appropriate wash treatment for the condition.
Algae that returns within days of treatment, or black algae rooted into plaster, usually can't be solved chemically. A drain and wash gets to the source.
Brown, yellow, rust, or mineral staining that brushing and chemicals can't remove is a sign the plaster itself needs treatment.
Pools that have sat for months with murky, unswimmable water often require a full drain, clean, and fresh start before normal maintenance can resume.
Heavy calcium scaling and rough, crusty surfaces affect both the look of your pool and the effectiveness of your chemicals.
Every pool and every situation is different. We assess what your pool actually needs before recommending a treatment, so you get the right fix — not the most expensive one.
Plaster age, stain type, algae severity, and how long the pool has sat all factor into which treatment is appropriate. We look first, then advise.
Improper draining can crack or float a pool shell. We handle the process correctly, accounting for soil conditions, drainage, and timing.
Acid wash, chlorine wash, or a combination — matched to your pool's actual condition. We explain the recommendation in plain terms before any work begins.
Once the wash is complete, we coordinate the refill and balance your water chemistry so the pool is ready to swim within days, not weeks.
Not every dirty pool requires the same treatment. The right call depends on the severity of the algae, the condition of the plaster, and how long the pool has been out of service. Here’s how we think through it:
Acid Wash
Chlorine Wash
Best For
Deep stains, severe algae, extended neglect
Moderate algae, surface-level buildup.
How It Works
Muriatic acid strips a thin layer of plaster to expose a clean surface below
High-concentration chlorine kills and lifts algae and organic matter from the surface
Plaster Impact
Removes a thin layer — not recommended for thin or aging plaster
Non-abrasive — preserves plaster integrity
When It's the Right Call
Pool hasn’t been swimmable in months; staining is deep-set or widespread
Pool turned green but the structure is otherwise sound and plaster is in good condition
How Often
Every 5–7 years maximum
Can be done more regularly as conditions require
Cost
Higher — labor-intensive process requiring full drain and acid application
More affordable — effective for many common green pool situations
"If a chlorine wash can fix it, we will say so. Acid washing when it is not needed shortens the life of your plaster — and costs you more money. We give you the honest answer, not the upsell."
The process should feel transparent from start to finish. Here is what a typical service covers:
Plaster looks brighter, stains are gone, and water runs clear. Most homeowners say the results are better than they expected, especially on pools that have been struggling for a full season or more.
Algae and organic buildup in the plaster is one of the main reasons pools keep turning green. Once the surface is clean, your sanitizer works the way it is supposed to, and balancing becomes significantly easier week to week.
No hidden algae, no bacteria lurking in plaster cracks, and no rough surfaces on feet and hands. A properly washed pool is simply a better pool to swim in.
Heavy algae and scale buildup accelerates plaster degradation and makes your equipment work harder. A clean reset now can extend the life of your surface and reduce wear on your pump and filter over time.
Stay ahead of pool problems with simple preventative care across Scottsdale and the Greater Phoenix Metro.
The right wash depends on your plaster's age and thickness, the type of staining, the algae species involved, and how long the pool has been neglected. We look at all of it before recommending anything.
If a chlorine wash handles the problem, we will not sell you an acid wash. Our goal is the right fix, not the most expensive one. We explain our recommendation clearly and give you options before any work begins.
Improper draining, over-acid-washing, or skipping neutralization steps can damage your plaster permanently and cost thousands to repair. We follow the correct process every time, which means the job gets done once.
If a service-related issue comes up immediately after the work is complete, contact us within 24 hours and we will re-check it at no charge.
A picture says it better than we ever could. Below are real pools we have drained, washed, and brought back to life for homeowners across Scottsdale and the Greater Phoenix Metro.
If your pool has turned completely green and doesn’t respond to shock treatment within a few days, has deep staining on the plaster that scrubbing won’t remove, has been sitting unused and neglected for months, or has extremely high cyanuric acid (stabilizer) levels that lock out chlorine, a drain and wash is likely the most cost-effective solution. We can assess it on-site and tell you definitively.
It can be, if done incorrectly. Pools — especially fiberglass and older plaster shells — can crack or ‘pop’ out of the ground when drained if soil conditions aren’t accounted for, or if the pool is left empty too long. We drain pools quickly and safely, and schedule the refill promptly. We don’t leave a pool sitting empty.
Most drain and wash services are completed within one day. Draining takes several hours depending on pool size, the wash and rinse process typically takes 2–4 hours, and then the refill begins. With a water truck, refill can be completed the same day. With tap fill, it usually takes 1–2 days. We’ll give you a realistic timeline before we start.
Acid washing removes a thin layer of plaster each time it’s done, so it should be done sparingly — typically no more than every 5–7 years. If you’re washing more frequently than that, there’s usually an underlying chemistry or maintenance issue worth addressing.
Done correctly, no. Acid washing is a controlled process that exposes a fresh layer of plaster and removes staining. Done incorrectly — with too strong a solution or left on too long — it can etch or damage the surface. We follow proper dilution and timing protocols every time.
Yes. Sometimes a drain and refill is all that’s needed — particularly to dilute high cyanuric acid levels or reset chemistry that’s completely out of range. We’ll let you know if that’s the case and only recommend a wash when the plaster condition actually calls for it.
We pump the water to an appropriate drainage location in compliance with local ordinances. In the Phoenix metro, this typically means draining to the street, an irrigation system, or a designated drainage area. We handle this correctly — improper discharge can result in fines.
We ask that someone be available at the start of service to walk through the assessment and again at completion for the post-service walkthrough. You don’t need to be present for the entire process.
We serve residential pools across Scottsdale and the Greater Phoenix Metro. Ask if your neighborhood is on our current routes.
