
Mature trees and hard water leave tannin stains and calcium scale deep in Chandler pool plaster. Coronel Pools strips that buildup and brings the surface back to a clean, bright finish.
Chandler has some of the most mature, tree-canopied neighborhoods in the East Valley, and that tree cover changes what pool plaster deals with. The leaves, blossoms, and pollen that drop into the water leave tannin stains that sink into the plaster over the seasons, and the hard city water builds a calcium crust on top of them. The combination is stubborn, because the organic stain and the mineral scale layer together, and once they are embedded, brushing and chemicals will not lift them. An acid wash dissolves both layers and reveals the clean surface underneath. We tailor the process to the specific staining patterns we see across Chandler, from the tree-lined lakes pools in Fulton Ranch to the family yards in Ocotillo.
Chandler's mature trees drop organic debris that leaves tannin stains, and the hard water lays calcium scale right on top of them. We drain the pool and apply a controlled acid solution that dissolves both layers together, because cleaning one without the other leaves the stain visible underneath the scale. The strength is mixed to your plaster condition so we lift the buildup without thinning the surface too far.
Tree debris feeds algae blooms, and Chandler's tree-lined pools see them more often than open-lot neighborhoods. When the algae keeps returning after shocking, the spores have worked into the plaster itself. The acid wash kills them at the surface so the bloom cannot reestablish from the plaster, which is what breaks the cycle of green coming back every few weeks.
Before we apply any acid, we inspect the plaster for cracks, delamination, and thin spots. The established pools in Ocotillo and Andersen Springs have had more seasons to accumulate wear, and some have been washed before. We measure the condition honestly and tell you if the surface is too thin to safely wash, rather than going ahead and shortening its life.
The calcium ring on the tile is especially thick on Chandler pools because the tree debris and the hard water combine to build it up fast. While the pool is drained for the wash, we clean that ring off the tile so the waterline looks fresh. The tile is only reachable with the water down, so we fold this into every acid wash.
After the surface is clean, we neutralize the acid with soda ash and rinse the entire pool thoroughly so no active residue stays in the plaster. We check the surface pH before starting the refill, because leftover acid keeps eating away at the plaster after the pool is filled. We do not skip this step.
A freshly washed pool starts with empty, unbalanced water. After the refill, we set up the chlorine, pH, alkalinity, calcium, and stabilizer from scratch. Chandler fill water runs hard, so we manage the calcium and pull the pH down to a level that protects the new surface. We hand the pool back ready to swim.
We use professional-grade muriatic acid, diluted to the strength that fits your plaster. Chandler's tannin stains and calcium scale layer together, so the acid has to lift both in one pass, but the established surfaces in neighborhoods like Ocotillo need a measured hand so we do not thin the plaster too far. We mix each batch on site based on what we see when the pool is drained.
For the refill and rebalance, we use chlorine, pH adjusters, alkalinity increaser, calcium hardness adjuster, and cyanuric acid stabilizer from suppliers like Hasa, BioGuard, and Leslie. Chandler fill water comes in high in calcium and pH, so the setup is as much about pulling those down as it is about adding chlorine. We build the chemistry to a level that keeps the fresh surface from scaling again right away.
Every Chandler acid wash follows the same sequence so the tannin and calcium layers come off together and the fresh water is balanced before you swim.
We pump the pool down and walk the empty shell to read the plaster. We look for cracks, thin spots, and delamination, and we map where the tannin stains and the calcium crust are deepest. The acid strength is planned from what we see on the bare surface, not from a guess.
We apply the acid solution in sections, scrub the walls and floor to lift the tannin and calcium layers together, and clean the tile line while the water is down. Once the surface is clean, we neutralize the acid with soda ash and rinse the whole pool thoroughly so no active acid remains in the plaster.
We refill the pool, test the fresh water, and build the chemistry from the ground up. Chandler fill water runs hard and high in pH, so we pull the pH down, set the alkalinity and stabilizer, and bring the chlorine to a safe level. We hand the pool back bright, clean, and ready to swim.
If you notice any of these, it is time to call us for a professional pool acid wash in Chandler.
Every Chandler acid wash covers draining the pool, inspecting the plaster, applying the acid solution, scrubbing the surface, cleaning the tile line, neutralizing and rinsing, refilling, and building the fresh water chemistry from scratch. We follow the same sequence every time so the tannin and calcium layers come off together and nothing gets missed.
An acid wash removes a thin layer of plaster, so we do not recommend it every year. We only suggest it when the tannin staining, scale, or algae is bad enough to justify the wear. We give you a free written quote after seeing the pool so you know exactly what is involved and can decide what works for your surface.
Get a free written quote from Coronel Pools. We take a look at your Chandler pool, explain your options, and let you decide. No pressure.
From the tree-lined lakes pools in Fulton Ranch and Springfield Lakes to the family yards in Ocotillo and the newer builds in Cooper Commons and Sun Groves, our team knows the staining patterns common to each Chandler neighborhood. Tree debris and hard water shape how we mix and apply every wash.
Beyond acid washing, our team handles the full range of pool service needs under one roof for Chandler homeowners.
Answers to the questions Chandler homeowners ask about pool acid washing.
Get a free written quote from Coronel Pools today and see why homeowners across Chandler trust us with their pools.