We Were the 4th Pool Company in 4 Months — Here's What We Found
Three companies fired in four months. The homeowner blamed bad service. The real problem? A $3 o-ring on a suction line that nobody checked. Here's the full story.
We were the fourth pool company in four months. The homeowner was convinced the problem was bad service — every company they hired could not keep the pool clear, so they fired them and tried the next one. Three companies came and went. None of them fixed the pool. When we showed up, the homeowner was already planning to fire us too.
The problem was never the service. It was a suction leak on the pump that no one diagnosed. Here is what happened, why three companies missed it, and what it teaches every Frisco pool owner about the difference between a cleaning service and a real pool service.
The Symptom Everyone Saw
The pool would not stay clear. It would look good for 2-3 days after service, then cloud up by mid-week and develop a slight green tinge by the weekend. Every company that came in did the same thing — added more chlorine, brushed harder, cleaned the filter more often. The water would temporarily clear up after their visit, then drift back to cloudy and greenish within days.
The homeowner assumed incompetence. "They're not adding enough chlorine." "They're not brushing." "They're rushing through the visit." Three companies fired in four months for the same perceived failure.
What We Found
On our first visit, we did what we always do — full chemistry panel and equipment inspection before touching the water. The chemistry was actually not terrible. Chlorine was low but not zero. pH was slightly high. CYA was in range. Nothing in the chemistry explained the persistent cloudiness.
Then we looked at the pump.
Air bubbles in the pump strainer basket. With the pump running, we could see a steady stream of small air bubbles swirling inside the clear pump lid. That is not normal. A properly sealed pump should show solid water with zero air inside the housing.
Air in the pump means a suction-side leak — air is being pulled into the plumbing somewhere between the skimmer and the pump inlet. This creates three cascading problems:
Problem 1: Reduced flow. Air in the pump reduces the volume of water being moved. The pump sounds normal and the motor runs fine, but actual gallons-per-minute drops 30-50%. Reduced flow means reduced filtration — the water is not being cleaned effectively even though the pump appears to be running.
Problem 2: Reduced filtration pressure. Lower flow means lower pressure at the filter. The filter needs a minimum pressure to effectively capture particles. Below that pressure, small particles pass through the filter media and stay suspended in the water — causing persistent cloudiness that no amount of chlorine fixes.
Problem 3: Chlorine distribution fails. With reduced circulation, chlorine does not distribute evenly throughout the pool. Dead zones develop — areas with low flow where chlorine depletes faster than it is replenished. Algae starts in these dead zones first, which is why the pool would develop a slight green tinge in specific areas by mid-week.
Where the Leak Was
We found the suction leak at a union fitting on the suction pipe between the skimmer line and the pump inlet. The union's o-ring had deteriorated — cracked and flattened from age and chemical exposure. When the pump ran, it created negative pressure (suction) on the pipe, and air was pulled in through the degraded o-ring seal.
The fix: New o-ring. Cost: $3. Labor: 15 minutes. Total repair: under $50.
A three-dollar o-ring caused four months of green pools, three fired pool companies, and hundreds of dollars in wasted chemicals.
Why Three Companies Missed It
They were cleaning companies, not service companies. The three previous companies showed up, tested chlorine and pH, added chemicals, skimmed, brushed, and left. They treated the symptom (low chlorine, cloudiness) without diagnosing the cause (why was the chlorine depleting so fast? why was the water staying cloudy despite filtration?).
They did not inspect equipment beyond basic function. The pump turned on. It made water move. It sounded normal. For a cleaning-only service, that is "working." They never looked inside the pump lid while it was running to check for air. They never checked suction-side fittings for leaks. They never measured flow rate to see if the pump was delivering adequate circulation.
They did not think like diagnosticians. When a pool will not stay clear despite proper chemical dosing, the problem is almost never "more chemicals needed." It is a circulation, filtration, or equipment problem that chemicals cannot solve. The three previous companies kept throwing chemicals at a plumbing problem.
What This Means for You
If you have cycled through multiple pool companies and the problem persists — the problem is probably not the companies. Something mechanical or structural is causing the issue, and every company is treating symptoms instead of finding the root cause.
Signs your pool has an undiagnosed equipment problem:
- Pool clouds up 3-4 days after every service, no matter who services it
- Chlorine depletes faster than expected despite proper dosing
- You can see air bubbles inside the pump strainer housing
- The pump sounds normal but the return jets feel weak
- Algae keeps returning in the same area of the pool
- Filter pressure is lower than it should be (or higher if the filter is compensating)
What to ask your pool service: "Can you do a full equipment diagnostic — not just test the water, but check flow rate, inspect for suction leaks, verify filter pressure, and assess pump performance?" If they cannot or will not do this, they are a cleaning service, not a pool service.
The Difference Between Cleaning and Service
| Cleaning Service | Full Service |
|---|---|
| Tests chlorine and pH | Tests full chemistry panel |
| Adds chemicals | Diagnoses why chemicals are not holding |
| Skims and brushes | Inspects equipment for problems |
| Checks if pump is running | Checks if pump is running correctly |
| Treats symptoms | Finds root causes |
| Leaves when pool looks clean | Leaves when pool is actually healthy |
The homeowner who fired three companies was not wrong to expect results. They were hiring the wrong type of company. A cleaning service maintains a healthy pool. A full service company diagnoses and fixes an unhealthy one.
We have been that homeowner's service for over a year now. The pool has been crystal clear since the day we replaced a three-dollar o-ring.
Fired multiple pool companies and the problem persists? Hydra Pool Services diagnoses equipment and plumbing problems that cleaning-only services miss. Start your free 2-week trial →
John Smith, CPO-Certified Pool Technician
Servicing pools across Frisco, Plano, McKinney & North DFW.