Category: Pool Tips

Pool water chemistry is the foundation of a clean, safe, and clear pool. Get it right and your pool practically takes care of itself. Get it wrong and you are fighting algae, cloudy water, or irritated eyes all season. This guide covers the essentials for Connecticut and New York pool owners.

The 5 Parameters Every Pool Owner Should Test

Test your pool water at least once a week during swim season. Our technicians test all five of these on every visit:

• pH (target 7.2 to 7.6) — The most important parameter. Low pH causes eye irritation and corrosion; high pH reduces chlorine effectiveness and causes scaling.
• Total Alkalinity (target 80 to 120 ppm) — Acts as a buffer that prevents pH from swinging wildly.
• Free Chlorine (target 1 to 3 ppm) — Your primary sanitizer. Kills bacteria and prevents algae. Drops fast in hot weather and after heavy rain.
• Cyanuric Acid (target 30 to 50 ppm) — Protects chlorine from UV degradation. Essential for outdoor pools in Connecticut summers.
• Calcium Hardness (target 200 to 400 ppm) — Prevents plaster, liner, and equipment corrosion.

How Connecticut Climate Affects Pool Chemistry

• Heavy pollen (April through June) — Introduces organic contamination that consumes chlorine rapidly and can cloud water
• Summer thunderstorms — Rain dilutes chlorine and raises pH; a storm can put your chemistry out of range overnight
• High bather load on hot days — Sweat, sunscreen, and organic matter spike chlorine demand
• Late-season cool temperatures — Cold water slows algae but also slows chemical reactions

The Correct Order to Add Pool Chemicals

1. Adjust Total Alkalinity first
2. Adjust pH
3. Adjust Calcium Hardness if needed
4. Add Cyanuric Acid if stabilizer is low
5. Add Chlorine or shock last

When to Shock Your Pool

• After heavy rain or a big pool party
• When you notice a strong chlorine smell (that is chloramines, not free chlorine)
• When water becomes cloudy without an obvious cause
• At pool opening and closing
• Any time free chlorine drops below 1 ppm

Leave Chemistry to the Professionals

Our weekly pool maintenance service includes professional water testing and chemical balancing on every visit. Call (203) 424-1258 to start professional maintenance.

A proper pool closing in Connecticut and New York is essential. Freezing temperatures can crack plumbing lines, split pump housings, and destroy heater components when water is left in the system. This checklist covers everything a complete winterization should include.

When to Close Your Pool in CT and NY

Close your pool before overnight temperatures drop below 32 degrees Fahrenheit consistently, typically mid-October in Fairfield County and Westchester County. Waiting too long risks a freeze event catching you off guard.

Water Chemistry: One Week Before Closing

• Test and balance pH to 7.2 to 7.6
• Adjust total alkalinity to 80 to 120 ppm
• Shock the pool with a high dose of chlorine
• Add winter algaecide per label directions
• Add a metal sequestrant if your water has iron or copper

Equipment Shutdown

• Turn off and unplug the pump, filter, heater, and automation system
• Drain water from the pump, filter, heater, and chlorinator
• Remove and store the pump strainer basket and cartridge filter elements
• Backwash DE or sand filters and drain completely
• Remove and store any in-line chlorinators or salt cells

Blowing Out the Plumbing Lines

• Lower water level 12 to 18 inches below the skimmer for mesh covers
• Blow out all return lines, skimmer lines, and main drain lines with a blower
• Install winter plugs in all returns, skimmer, and main drain
• Verify all plugs are seated. Water in any line will freeze and crack it.

Accessories and Cover

• Remove ladders, handrails, diving boards, and slides and store indoors
• Remove and store skimmer baskets, return eyeballs, and other fittings
• Install and secure winter cover with no gaps where debris can enter
• Add water tubes or cover anchors to keep the cover secure through winter storms

Professional Pool Closing Service in Fairfield County and Westchester

Perfect Pools CT handles every step of this checklist for you. Our closing service protects your pool through the Connecticut and New York winter and sets you up for a fast, easy opening come spring. Learn more about our closing service or call (203) 424-1258 to book your closing date. October appointments go quickly.

Opening your pool for the season in Connecticut is more involved than simply removing the cover and turning on the pump. Done right, a proper spring opening protects your equipment, clears your water quickly, and sets up a trouble-free swim season.

When to Open Your Pool in CT

In Fairfield County and most of Connecticut, the ideal time to open your pool is when overnight temperatures consistently stay above 50 degrees Fahrenheit, typically mid-May to early June. Opening too early means fighting algae in cold water; opening too late means losing swim days.

Step 1: Remove and Inspect the Winter Cover

Pump off standing water before removing a solid safety cover. Mesh covers drain on their own but may have debris to clear first. Once removed, rinse the cover, let it dry, and inspect it for tears before storing. A damaged cover will not protect your pool next fall.

Step 2: Remove Winter Plugs and Reinstall Fittings

Pull the winterizing plugs from all return jets and the skimmer. Reinstall your skimmer basket, eyeball fittings, and any other removable fittings. Check O-rings for wear and replace any that look cracked or brittle.

Step 3: Fill the Pool to the Correct Level

Water level should be at the midpoint of the skimmer opening, typically halfway up the skimmer faceplate. Use your garden hose to top it off if the level dropped over winter.

Step 4: Reconnect and Start Up Equipment

Reinstall any pump or filter components you stored over winter. Reconnect the heater if applicable. Prime the pump, open all valves, and power everything on. Listen for unusual noises and check for leaks at unions and fittings before walking away.

Step 5: Test and Balance the Water

Before adding any chemicals, test the water for pH, alkalinity, chlorine, cyanuric acid, and calcium hardness. Adjust in this order: alkalinity first, then pH, then chlorine. Shocking the pool after balancing helps clear any algae that developed over winter.

Step 6: Clean the Pool Thoroughly

Brush the walls and floor to loosen algae and debris. Vacuum everything to waste if the water is green or heavily contaminated. Run the filter continuously for 24 to 48 hours after the initial treatment and retest before swimming.

Hire a Professional Pool Opening Service in CT

A professional opening from Perfect Pools CT covers everything above, plus we bring the right chemicals, the right equipment, and years of experience with Connecticut pools. Most openings are completed in a single visit. Learn more about our pool opening service or call (203) 424-1258 to book your date. Spring slots fill fast.

Your pool pump is the heart of your pool’s circulation system. When it starts failing, water quality drops fast — and if you ignore the warning signs long enough, what could have been a simple repair turns into a full pump replacement. Here are the five signs to watch for.

1. Loud Grinding, Screeching, or Rumbling Noises

A healthy pool pump hums. Grinding, screeching, or rumbling sounds usually point to worn bearings inside the motor — a common failure mode in pumps that have been running for several seasons. Bearing replacement is typically straightforward and far cheaper than a full pump replacement. Don’t wait: worn bearings accelerate and can seize the motor completely.

2. Pump Loses Prime or Won’t Prime

If your pump struggles to hold prime (the water level in the pump basket drops or disappears) or won’t prime at startup, you likely have an air leak somewhere in the suction side of the system. Common culprits: a cracked pump lid, worn O-ring on the lid or unions, or a loose fitting at the skimmer or main drain. Air leaks starve the pump of water, reduce flow, and can burn out the motor if left uncorrected.

3. Low Flow or Weak Jets

If the return jets feel weak or the water barely moves, the pump isn’t circulating properly. This leads to poor filtration, chemical dead spots, and algae growth. Check the pump basket and skimmer baskets first — blockages there are the simplest fix. If baskets are clear, the issue may be a partially closed valve, a clogged impeller, or a failing motor.

4. The Pump Runs but the Filter Pressure Doesn’t Build

Normal filter pressure for most residential pools is 8–15 PSI depending on the system. If the pump is running but pressure is unusually low (under 5 PSI), the impeller is likely clogged with debris. Hair, leaves, and small debris can bypass the basket and jam the impeller — restricting flow and putting strain on the motor. This is a common repair our technicians handle during service visits.

5. Visible Leaks Around the Pump

Water pooling around the pump housing or dripping from the shaft seal is never normal. A leaking shaft seal is a common wear item that should be replaced promptly — water leaking into the motor housing will cause a short and destroy the motor. Union leaks (at the connections to your plumbing) are simpler and usually just need a new O-ring.

When to Repair vs. Replace Your Pool Pump

As a general rule: if a pump is under 5–7 years old, repair is usually the right call. If it’s older and experiencing multiple issues simultaneously, replacement often makes more financial sense — especially with today’s energy-efficient variable-speed pumps, which can cut pump energy costs by 50–75% compared to single-speed models.

Pool Pump Repair in Fairfield County and Westchester

Perfect Pools CT diagnoses and repairs pool pumps throughout Fairfield County, CT and Westchester County, NY. Our technicians carry common parts and can often complete repairs in a single visit. Call (203) 424-1258 to schedule a pump inspection — don’t let a small problem become a full replacement.