Algae can take over a pool in a matter of days when the circumstances line up: a week of heat after a storm dumps organic debris into the water, an equipment failure that interrupts circulation, or a vacation where no one was watching the chemistry. The pool turns green or yellow-green, the walls feel slick, and the water clarity drops to near zero. At that point, simply shocking the pool usually isn't enough—the question is whether the chemistry state allows a chemical recovery or whether the cyanuric acid concentration is so elevated that the available chlorine can't do its job, which means a partial drain is the more effective path.
Green pool recovery at K&D Quality starts with a full water test to determine which direction makes sense. If chemistry is recoverable, the process involves a shock dose calculated to the actual volume and contamination level, algaecide application, a filter run schedule designed to turn the water over aggressively, and a brush schedule to pull algae off the walls into suspension where the sanitizer can reach it. Check-ins are daily or every other day until the water clears, so adjustments can be made if the algae type is more resistant than the initial assessment suggested. Filter cleaning is included at the end because a filter that's processed a bloom is loaded with dead algae and won't run efficiently until it's cleared.
In San Jose, green pool calls spike after the first heavy fall rains and again after spring heat events, when water temperature rises faster than most homeowners' chemical routines adjust for. Green pool recovery handled correctly doesn't just restore water clarity—it brings the pool back into a stable chemistry baseline that holds. A homeowner at the end of a successful recovery has water they can swim in, a clean filter running at normal pressure, and an understanding of what tipped the balance so the same conditions don't produce the same outcome next time. That handoff is part of every recovery job.
What's Included
Every green pool recovery visit includes
Chemistry-based recovery plan
Daily check-ins until clear
Filter clean included at end
Honest call on drain vs treat
Recovery from $385
Service Area
We proudly serve San Jose, CA and surrounding areas within South Bay, approx. 20 miles from San Jose
San JoseLos GatosSaratogaCampbellWillow GlenCambrian ParkAlmaden ValleyCupertinoSanta ClaraSunnyvale
Full-service weekly maintenance on a fixed route day. Includes brushing walls and tile line, vacuuming as needed, skimmer and pump basket emptying, filter pressure check, water testing for chlorine, pH, alkalinity, cyanuric acid, and salt, and chemical balancing. Equipment is visually inspected every visit and you get a text or email if anything's off. Same tech every week, never subcontracted. Most San Jose pools fall between $165 and $235 per month depending on size and tree cover.
Diagnosis and repair on every major brand: Pentair, Hayward, Polaris, Jandy, Sta-Rite, Zodiac, Raypak. Pumps, motors, filters, valves, plumbing, timers, pressure switches, unions, and o-rings. The parts that fail first ride on our truck, so most repairs close in a single visit. We tell you what's worth fixing and what's worth replacing, with the actual cost difference in writing before any work starts.
Full pool resurfacing for plaster pools showing stains, rough spots, hollow areas, or 15-plus years of wear, and fiberglass refinishing for gel-coat fading and osmotic blisters. Process includes drain, chip-out or prep, bond coat, new plaster or gel coat, fill and start-up chemistry over the first 28 days. Typical residential job runs 7 to 10 working days plus fill time. We coordinate the whole job, no separate contractors to chase.
Service and repair on attached spas and standalone hot tubs. Heater diagnosis, circulation pump replacement, jet repair, control pack swaps, cover lifter installs, and full drain-and-refills with line flush. We work on Sundance, Hot Spring, Caldera, Jacuzzi, and most older builder-grade attached spas. If the spa shares equipment with the pool, we already know the plumbing. Most diagnostic visits run under an hour and end with a clear written quote.
Salt cell diagnosis, descaling, replacement, and full new-system installation. We install and service Pentair IntelliChlor, Hayward AquaRite, Jandy AquaPure, and CircuPool. Existing cell scaled out? We test cell output and plate condition before quoting a replacement, plenty of cells just need a proper acid bath. New install on a chlorine pool typically runs $1,800 to $2,400 installed for a residential South Bay pool, including the cell, control board, flow switch, and plumbing.
Gas heater and heat pump repair on Raypak, Pentair MasterTemp, Hayward Universal H-Series, and Jandy LXi and JXi. Common fixes: ignition control modules, pressure switches, gas valves, thermal regulators, heat exchangers. We also install replacement heaters and run new gas lines through licensed sub when needed. Cold pool the week before a party? We carry the most-failed parts and most repairs finish same day. Full replacement installs run 1 to 2 days.