New Pool Startup
in Las Vegas
The First 28 Days Determine the Next 20 Years
Congratulations on your new pool. The 28 days following plaster application are the most critical period in your pool's entire lifespan. How your water is managed during startup directly determines the long-term appearance, durability, and health of your finish — whether it's traditional plaster, Pebble Tec, quartz, or glass tile.
What's Happening Inside Your Pool During Startup
A new plaster pool is a chemically active surface for weeks after application. Managing it correctly requires daily testing, precise chemistry adjustments, and consistent brushing — not a single startup visit and a bag of chemicals.
- Fresh plaster leaches calcium and minerals into the water continuously — calcium hardness must be monitored and managed daily
- pH and alkalinity shift rapidly and unpredictably — imbalance during this period causes permanent staining, discoloration, and etching
- Inadequate brushing allows calcium nodules to form on the surface — hard white lumps that embed permanently and cannot be removed without resurfacing
- Equipment must be carefully primed, monitored, and verified during first operation — especially pumps, filters, and salt systems
- Water balance must be maintained within tight LSI parameters to allow plaster to cure correctly and reach full hardness
- Sequestering agents must be added early to prevent metal and mineral staining from Las Vegas fill water
- Las Vegas hard water makes startup chemistry more demanding than almost any other market in the country
New Pool Startup for All Finish Types
Every pool finish has different startup chemistry requirements. We understand the specific demands of each surface and manage your startup accordingly — not with a one-size-fits-all approach.
The Complete Day-by-Day Startup Process
Our startup follows the National Plasterers Council recommended procedure — the industry standard for protecting your interior finish. Every step is performed in the correct order with documented results. Whether you hire us or do it yourself, this is the right way to start a new pool in Las Vegas.
Pool Filling & Equipment Startup
- 1Confirm all pool filtration equipment is operational before filling begins.
- 2Place a clean cloth on the end of the fill hose and position the hose at the deepest area of the pool to prevent surface damage. If a water truck is required, place an initial 24 inches (60 cm) of water at the deepest area first to create a cushion before the truck water cascades in.
- 3Fill the pool to the middle of the skimmer (operating water level) without interruption and as rapidly as possible with clean, potable water. Uninterrupted fill prevents bowl rings and minimizes shrinkage cracking. If you're filling overnight and concerned about overfilling while unattended, it's better to slow the tap down than to stop and restart — interrupted fill is worse than a slower continuous fill.
- 4Do not allow any external water sources to enter the pool during fill — this causes streaking. No swimming until water is balanced and sanitized. No persons or pets in the pool during fill.
- 5Test fill water for pH, total alkalinity (TA), calcium hardness (CH), and metals before adding any chemicals. Record all results.
- 6Start the filtration system immediately once the pool reaches operating water level.
Initial Chemistry Setup & First Brush
- 1Test fill water for pH, total alkalinity (TA), and calcium hardness (CH). Record all results.
- 2If alkalinity is high, adjust downward to 80–100 ppm using pre-diluted muriatic acid (31–33% hydrochloric acid). Always pre-dilute acid by adding it to a 5-gallon bucket of water first — never add water to the acid.
- 3If alkalinity is low, adjust upward to 80 ppm using sodium bicarbonate (baking soda).
- 4Once alkalinity is in range, adjust pH to 7.2–7.6 using pre-diluted muriatic acid.
- 5Adjust calcium hardness upward to 80–100 ppm using calcium chloride. Add in 10 lb. increments with several hours between each addition. Never add calcium chloride and sodium bicarbonate at the same time.
- 6Brush the entire pool surface thoroughly at least twice daily to remove all plaster dust. No wheeled vacuums or wheeled pool cleaners until after Day 28 — brush vacuums and non-wheeled cleaners are acceptable.
- 7Add a sequestering agent per manufacturer's recommended initial startup dosage. This is especially important in Las Vegas where fill water contains metals that cause staining if not treated immediately.
- 8Run pumps and filtration continuously for a minimum of 7 days (minimum 72 hours) until plaster dust has been brushed away, filtered out, and water is no longer cloudy.
Retest & Raise Calcium Hardness
- 1Test pool water for pH, total alkalinity (TA), and calcium hardness (CH). Repeat all adjustment steps from Day 1 except for the sequestering agent.
- 2Once TA is in the 80–100 ppm range and pH is 7.2–7.6, raise calcium hardness upward to 100–150 ppm. Continue adding calcium chloride in 10 lb. increments with several hours between additions. Never add calcium chloride and sodium bicarbonate simultaneously.
- 3Continue brushing the entire pool surface at least twice daily.
Introduce Chlorine & Continue Brushing
- 1Test and adjust pH, total alkalinity (TA), and calcium hardness (CH) as per Day 2. Continue running pumps continuously.
- 2Add pre-diluted liquid chlorine to bring free chlorine to 1.5–3.0 ppm. This is the first chlorine addition — introducing it earlier bleaches and damages the curing surface.
- 3Brush the entire pool surface thoroughly at least twice daily to remove all remaining plaster dust.
Daily Maintenance Chemistry — Scaling Prevention
- 1Test and adjust pH and total alkalinity (TA) daily, maintaining the Day 2 ranges. Continue brushing and running pumps every day for this full stretch. This daily consistency prevents scaling of the pool surface during the most vulnerable stage of curing.
- 2In-floor cleaning systems and directional eyeballs may be activated once water chemistry is balanced and stable.
Raise Calcium Hardness to 200 ppm & Begin CYA
- 1Increase calcium hardness (CH) slowly to a minimum of 200 ppm if needed. Continue adding in increments, never all at once.
- 2Begin adjusting cyanuric acid (CYA/stabilizer) to the 30–50 ppm target range. Add CYA through the skimmer while pumps and filtration are running. Allow at least 3 days for CYA to fully dissolve and register in testing. Brush the entire interior after each addition.
Plaster Hardening & Ongoing Monitoring
- 1On Day 7: if any plaster dust remains, remove it using a brush pool vacuum. After Day 7, once plaster dust is fully removed and a cleaning system is in place, brushing can be scaled back to removing visually observed debris (leaves, dirt) or when adding chemicals.
- 2Continue monitoring and adjusting pH, TA, CH, CYA, and chlorine throughout the full 28-day window. Chemistry is still actively shifting as the plaster continues to cure and stabilize.
- 3Monitor the LSI (Langelier Saturation Index) throughout this period. Target: 0.0 to +0.3. A negative LSI causes etching and leaching. A positive LSI above +0.3 causes scaling.
- 4Verify equipment performance across full operating cycles. Document all readings for warranty records.
- 5For salt water pools: salt addition and SWG activation occur at Day 30 minimum.
Ongoing Water Chemistry & Maintenance
The NPC requires the LSI to be maintained between 0.0 and +0.3 for ongoing maintenance, especially during the first six months after startup, to avoid potentially serious damage to the interior finish surface. Pool water chemistry changes constantly — continued monitoring is not optional.
- 1Note on carbonate alkalinity: carbonate alkalinity (CA) is not the same as total alkalinity (TA). CA = TA minus one-third of CYA. This is the value used in LSI calculations — not raw TA.
- 2CYA caution: CYA levels of 100 ppm and above have been shown to cause permanent surface deterioration. If CYA approaches 100 ppm, a partial drain is recommended to bring it back within the 30–50 ppm range.
- 3Always pre-dilute chemicals before adding to pool water. Add while pumps are running, at the deep end away from benches, steps, and suction lines. Brush the area after each addition to disperse.
Understanding Your New Pool Finish
New pool owners are sometimes alarmed by characteristics of their finish that are completely normal and are not defects. The National Plasterers Council's Interior Finish Disclosure — which we follow as NPC-certified professionals — outlines what to expect from any cementitious pool finish.
What Happens If Startup Is Done Incorrectly
Improper new pool startup causes permanent damage. None of these defects are reversible without significant resurfacing expense — and all of them are entirely preventable with professional startup care.
Startup for Advanced Equipment Systems
Las Vegas new pool builds increasingly include sophisticated equipment systems that require careful commissioning during startup. We handle all of it — not just the chemistry.
Protecting Your Warranty With Professional Startup
Most pool builders and plaster manufacturers require professional startup documentation to honor their surface warranty. Our startup service provides everything you need — and our NPC-certified procedures satisfy the documentation requirements of all major plaster and finish manufacturers.
What We Document for Your Warranty
Every startup receives written documentation from day one through the final handoff — giving you a complete record if any surface issue arises after startup is complete.
- Written chemistry logs from every visit during the startup period
- Equipment startup and commissioning documentation
- Surface condition observations throughout the curing window
- Final startup completion report with chemistry baseline
- Equipment settings record for ongoing service reference
- NPC-compliant startup procedure confirmation
Seamless Transition to Weekly Service
The end of your startup period is the beginning of your pool's long-term care. We transition every startup client directly into a weekly service plan — no gap, no learning curve, no starting over.
Why Our Handoff Is Different
When we start your weekly service, we already know your pool inside and out — because we've been there every day since the water went in.
What Our Clients Say
"We originally called Nearby Pool Service first to help with cleaning our main pool filter, but were impressed enough by their knowledge and courtesy that we decided to try them out for a regular pool service, after having cancelled with our previous company (who had been doing little more than a five-minute service I could do myself on a Saturday morning both better and more cheaply). And, oh boy, this has been like night and day. The care provided by Nearby Pool Service is consistently thorough and high quality, and the owner and his staff alike are friendly and knowledgeable about pool chemistry and equipment. They've been happy, even eager to share information, and explain how and why services are being performed, as well as answering any questions we have about it. Our pool looks better than ever thanks to their care, and their approach feels like it's adding to the pool's life as well as just keeping it in good swimming condition."
"I've worked with this pool service for a couple years now. their pool service is excellent, Knowledgeable, always very polite prompt. Answers any questions you may have. I cannot speak highly enough about this company . So if you're looking for a pool service please give them a try . Thank you Cat"
"We needed someone to install new cartridges for our pool filter and do a one time cleaning. Justin came through for us and even picked up an o-ring for us so there were no hiccups in the process. Justin and his team did a neat and thorough job. We are new pool owners and he happily answered some questions I had."
Frequently Asked Questions
How long does new pool startup take?
Why does a new pool need daily brushing?
When can chlorine be added to a new pool?
Can I swim during the startup period?
What happens if startup is done incorrectly?
Does startup service include chemicals?
My new plaster looks uneven or has hairline cracks — is that normal?
What happens after startup is complete?
Do you work with all pool builders in Las Vegas?
NPC Technical Resources for Pool Owners
The National Plasterers Council — the foremost authority on cementitious pool interior finishes — publishes free technical resources covering surface defects, water chemistry, startup procedures, and common owner FAQs. These are the same standards we follow on every startup we perform.
Videos, downloads, and technical bulletins covering fill water testing, hydration and curing, surface care, and ongoing maintenance. Organized for both pool owners and professionals.
Visit npconline.org →Common questions and answers about pool surface issues — including causes of discoloration, scaling, staining, and how to distinguish a defect from a normal finish characteristic.
Visit npconline.org →The NPC's official disclosure document covering what is and isn't a defect in a new pool finish — including normal mottling, color variation, crazing, and aggregate density variation.
Visit npconline.org →The official NPC recommended startup procedure card — the same document our startup process is built on. Download the full PDF directly from the NPC for your warranty records.
Visit npconline.org →