Pool Water Testing & Readings - ProBase

ProBase Features

Track Water Readings. Spot Problems Early.

Log pH, chlorine, alkalinity, and more at every stop. See what's changing before it becomes a callback.

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ProBase water readings screen showing pH, chlorine, and alkalinity logged to a service visit

The pool that's about to go green doesn't look green yet.

It looks fine today. But chlorine has been dropping for three weeks. Alkalinity is creeping up. If you're not tracking readings, you won't see it until the customer calls—and by then, it's a recovery job instead of a simple adjustment.

Most pool pros keep readings in their head. Maybe a notebook. But at 80–100 pools a week, no one's memory is that good. You need a record you can actually look back at.

ProBase logs water readings at every stop and shows you trends over time. You see the pattern. You make the adjustment. The customer never has to call.

Log readings in seconds. See trends at a glance.

Test the water like you always do. Open ProBase. Enter the numbers. Done—saved to that customer, that visit, that date.

pH The reading you check most. Log it every visit.
Free Chlorine Is the pool holding chlorine? You'll know.
Total Chlorine Combined chlorine matters. Track it.
Alkalinity The buffer that keeps everything stable.
Calcium Hardness Especially important for plaster pools.
Cyanuric Acid Is stabilizer creeping up? You'll see the trend.
Salt Levels For salt pools. Track generator output over time.
Temperature Affects chemical demand. Worth logging.
Trend Tracking

When readings become useful instead of just data.

  • This pool consistently drops chlorine faster than others—high bather load? Too much shade?
  • Alkalinity has been climbing since the homeowner started adding their own chemicals
  • CYA is getting high—time to recommend a partial drain before it's a problem

What changes when you actually track readings.

Tracking readings doesn't just make you more organized. It makes you a better pool tech.

Without Tracking With ProBase
"I think this pool runs low on chlorine" See 6 weeks of readings showing consistent chlorine drop
Customer calls about a green pool You saw alkalinity trending high last month and adjusted
Guessing at chemical doses Data-driven decisions based on actual readings
"What was the pH last time I was here?" Pull it up in 5 seconds
Callbacks for preventable problems Catch issues before the customer notices
Estimating chemical orders for the month See actual usage patterns across your route

Common questions

Answers to what pool pros ask most.

pH, free chlorine, total chlorine, alkalinity, calcium hardness, cyanuric acid, salt levels, and temperature. If you test it, you can log it.
Every reading you log is saved to the customer's history. View readings as a list or chart. Spot patterns over time—like a pool that consistently runs low on chlorine or one where CYA keeps climbing.
Coming soon. We're building water balance tools based on what pool pros tell us they actually need. For now, you can track all the individual readings that go into an LSI calculation.
Yes. ProBase is free because we partner with marketplaces. You can pick up jobs through ProBase if you want — we take a cut on those. You're never required to. Every tool stays free either way.

Know your pools better than anyone.

Join pool pros using ProBase to track water readings, spot trends, and catch problems before they become callbacks.

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