Pool Service and Maintenance Industry Terminology

Recommend an acid wash to remove copper stains and heavy scale on a neglected plaster pool; We’ll drain, acid wash, neutralize, and refill to reset chemistry; Always use PPE and protect nearby landscaping and decks during an acid wash.

Use a weekly dose of polyquat algaecide as a preventative in a high-bather-load pool; Switch to a copper-free algaecide to avoid staining on a new plaster finish; We’ll shock tonight and follow with a maintenance algaecide tomorrow morning.

Cloudy green water indicates an early-stage algae bloom accelerated by low FC and warm temps; The spa had a mustard algae bloom after a week without circulation; We’ll restore sanitizer, brush aggressively, and run the pump 24/7 until the bloom clears.

Raise TA to 90 ppm with sodium bicarbonate to stabilize pH drift; Your TA is 150 ppm, so we’ll lower it with acid and aeration to curb pH rise; Keep TA in the LSI target range for this plaster pool and SWG system.

Backwash the sand filter when pressure rises 8–10 psi above clean; After backwashing a DE filter, recharge with the correct DE dose; The sight glass is clear now—end the backwash and set to rinse for 20 seconds.

Verify the equipment pad is properly bonded per NEC before adding the heater; Install a bonding lug on the new SWG cell to prevent stray current corrosion; The GFCI trips indicate we need to check grounding on the light circuit.

CC is 0.6 ppm—dose liquid chlorine to reach breakpoint and eliminate chloramines; We’ll calculate breakpoint and shock overnight to avoid sunlight loss; After reaching breakpoint, CC dropped to 0.1 ppm and the odor disappeared.

CH is 180 ppm—raise to 275 ppm to protect plaster from etching; High CH and high pH are scaling the heater—let’s lower pH and consider a partial drain; We’ll watch CH when using cal-hypo shock to avoid creeping levels.

Rinse the cartridges when pressure rises 8–10 psi above clean; Use a filter cleaner soak to remove oils before an acid bath; This pool’s fine dust gets through sand—let’s upgrade to a 4-cartridge filter.

The strong odor is from chloramines—your CC is 0.8 ppm; UV on the indoor pool helps control chloramines between shocks; We’ll perform breakpoint chlorination to reduce CC below 0.2 ppm.

Your CYA is 90 ppm—let’s do a partial drain to improve chlorine efficacy; Target 30–50 ppm CYA for an outdoor non-SWG pool; Trichlor tabs add CYA, so we’ll monitor to avoid over-stabilization.

Backwash and recharge the DE with 6 pounds after cleaning; DE filters polish out fine dust better than sand in desert markets; Watch for DE in the pool—could indicate a torn grid or manifold crack.

Use FAS-DPD for accurate FC readings up to shock levels; The DPD color block bleached out—switch to FAS-DPD titration; Our weekly service includes FAS-DPD FC, CC, and pH testing.

We’ll drain 60% to lower CYA and TDS safely; Check groundwater before draining to avoid pool float—open hydrostatic valves if needed; The spa refill solved the persistent foaming from high TDS.

We’ll add floc overnight and vacuum to waste tomorrow; Don’t use floc with a cartridge filter unless you can vacuum to waste; Floc cleared the post-storm fine silt that the filter couldn’t grab.

We need 50 GPM to meet the 6-hour turnover on this 18,000-gallon pool; The variable-speed pump hits the target flow at 2,200 RPM; Verify flow with a flowmeter instead of relying only on pump curves.

Maintain FC at 5–7.5% of CYA for reliable sanitation; FC is 1.0 ppm—raise to 4.0 ppm to prevent algae; The controller will hold ORP after we set a minimum FC baseline.

Replace the outlet with a GFCI-protected receptacle at the equipment pad; Test the GFCI monthly per code; The pool light circuit must be on a GFCI to reduce shock risk.

Open the hydrostatic valve before draining to prevent float; We observed seepage into the main drain—likely a weeping hydrostatic valve; Replace the stuck valve while the pool is empty.

Rotate the Jandy valve to send more suction to the spa; We’ll rebuild the Jandy valve with new o-rings to stop the leak; Label the Jandy handles for normal and vacuum-to-waste positions.

LSI is −0.4—risk of corrosion and etching; let’s raise CH and TA; Summer water at 88°F pushed LSI positive—keep pH in check to avoid scale; We use LSI to balance water for plaster startup.

We’ll start with a bucket test to confirm a leak vs evaporation; Pressure test the return lines to isolate the leak zone; Call the sonar and dye detection team for the spa spillway.

Verify the main drain covers are VGB-compliant and secure; We’ll throttle the main drain to increase surface skimming; Split drains reduce entrapment risk compared to single outlets.

Add 24 oz of muriatic acid to lower pH from 7.9 to 7.5; Store acid separately from chlorine to prevent hazardous gas; Use acid and aeration to lower TA without overshooting pH.

Invoices are Net 30—late fees apply after 30 days; We moved commercial accounts from Net 45 to Net 30 to improve cash flow; Offer ACH to reduce Net 30 collection friction.

The ORP probe reads 720 mV—sanitation is adequate for this indoor pool; CYA suppressed ORP readings, so we rely on FC ppm for control; Clean and calibrate the ORP sensor per manufacturer schedule.

Keep pH between 7.2 and 7.8 for comfort and chlorine efficacy; Your pH is 8.0—dose acid to bring it to 7.5; High aeration from waterfalls is driving pH up—adjust TA to stabilize.

Add phosphate remover to bring levels below 200 ppb; Expect temporary clouding as lanthanum binds phosphates—filter will clear it; Phosphate control helps reduce algae pressure between services.

The VSP pays back in 18 months on electricity savings—great ROI; A robotic cleaner reduces labor—calculate ROI vs a vac head and manual time; Software for routing improved ROI by cutting windshield time 20%.

Recommend a robotic cleaner to cut down on manual vacuuming visits; The robot’s top-access basket makes debris removal easy; Program the robot for a daily cycle during the leaf drop season.

Increase route density to reduce drive time and fuel costs; We reorganized Tuesday stops to tighten route density; High route density boosts margins and technician capacity.

Salt is 3,200 ppm—right in range for the SWG; Scale on the SWG cell requires an acid soak; SWG output will be increased during the heat wave to maintain FC.

White crust on the tile line is calcium scale—let’s control LSI and bead-blast; The heater efficiency dropped due to scale—acid flush the exchanger; Prevent scale by keeping CH, pH, and TA in balance.

Add a phosphonic acid-based sequestrant to bind iron and copper; Maintain weekly doses to prevent new stains; Sequestrant won’t remove metals—use it to prevent staining while managing source water.

We’ll shock to 20 ppm FC overnight to clear combined chlorine; Use liquid chlorine to avoid adding more CYA; Brush after shocking to expose biofilms and algae.

Replace the stuck weir so surface debris skims properly; A missing weir reduces skimming and can cause air ingestion; Ensure the weir moves freely after adjusting water level.

The SVRS tripped—clear the blockage before resetting; Retrofit an SVRS if single main drain cannot be made unblockable; Test the SVRS function as part of the safety inspection.

TDS is over 2,500 ppm—consider a partial drain; High TDS can shift LSI and affect chlorine performance; After a year of trichlor use, TDS and CYA both climbed—reset with fresh water.

TC is 4.6 ppm and FC is 4.2 ppm, so CC is 0.4 ppm; TC alone doesn’t tell us sanitizer strength—compare to FC; We track TC and FC weekly to keep CC below 0.2 ppm.

The inline feeder uses trichlor tabs—monitor CYA rise; Trichlor’s low pH can drive pH down—balance with aeration or soda ash; Switch from trichlor to liquid during peak season to control CYA.

Code requires a 6-hour turnover on this public pool; At 50 GPM, the 18,000-gallon pool turns over every 6 hours; We’ll verify turnover after cleaning the filter and adjusting pump RPM.

Offer a VSP and LED upgrade during the equipment pad rebuild; Suggest a robotic cleaner to reduce manual vac visits; Propose a phosphate program to reduce algae pressure between services.

Add UV on the indoor pool to reduce chloramines; UV helps with crypto in splash pads alongside chlorine; Clean the quartz sleeve to maintain UV transmittance.

After floc, vacuum to waste to avoid clogging the filter; Set the multiport to WASTE and monitor water level while vacuuming; Discharge to an approved sewer connection per local regulations.

Program low RPM for filtration and higher RPM for spa jets; A VSP can cut energy use by 60–80% vs single-speed; Use a flow-based schedule instead of fixed RPM where possible.

Replace expired main drain covers to maintain VGB compliance; Document SVRS testing on single-suction systems; The inspector cited missing screws on the VGB drain covers.

We’ll blow out lines, add antifreeze, and install winter plugs before the first freeze; Lower the water below the skimmer and add a safety cover; Balance water and add winter chemicals to prevent spring stains.

Create a work order for the heater replacement with parts and labor; The tech closed the work order with photos and chemical readings; Our app auto-generates work orders from inspection findings.

Brush the shady walls—mustard algae hides from sunlight; Treat mustard algae with elevated FC, polyquat, and filter cleaning; Move floats and brushes into the pool during treatment to sanitize them.

Install a sacrificial zinc anode in the skimmer to mitigate galvanic corrosion; Bond the anode to the system ground on salt pools; Replace the anode when it’s significantly consumed.