Bring me your numbers.I’ll tell you exactly what to do.
No product to sell you. No general advice for a pool I’ve never seen. Submit your chemistry readings and get a step-by-step response for your specific pool within 24 hours.
Join the Circle
Founding membership is limited to the first 100 subscribers. The rate locks permanently for as long as your membership stays active.
First 100 subscribers only. Rate locked permanently.
Full access. All Circle benefits. No founding rate lock.
Every Circle tier includes
Submit your complete chemistry readings through the member form. Receive a step-by-step response within 24 hours. No guessing. No general advice.
Every response is written for your pool. Your surface type, your CYA level, your equipment. Not a template. Not a calculator output. An answer.
Access to the Pools Scientific Chemist’s Circle Telegram group. Members share what’s working, ask questions between submissions, and stay connected.
Bonus podcast content not available to the public. So What? subscriber episodes drop alongside the main feed, gated for Circle members.
15% off all Pools Scientific products, including The Spot Check. Your code is distributed through the Chemist’s Circle Telegram group.
Submissions received through the chemistry form are answered within 24 hours. No queues. No triage. Your pool doesn’t wait a week for an answer.
Not ready for the full Circle?
Two lower-commitment options for pool owners who want a toe in the water first.
The Test Kit
Community access via the Chemist’s Circle Telegram group, subscriber-only bonus episodes, and your member discount code. The discount applies to all Pools Scientific products, including The Spot Check. Need a chemistry response? Buy a Spot Check at your member rate. No personalized submissions are included with this tier.
Join for $13/Month
The Spot Check
Submit your complete chemistry readings and receive a full step-by-step response within 24 hours. Available to anyone at $29. Members apply their discount code at checkout. For Circle members who need a third, fourth, or seventh submission in a month, this is the mechanism.
Get a Spot Check — $29The pool store sells you a cycle
The Circle ends it.
A pool store visit runs $100 to $200. Roughly half of what people bring home creates a new problem that requires another product to fix. The cycle repeats because the pool store business model has no incentive to stop it. One visit with its typical cascade can pay for several months of the Circle. One season of it can pay for a full year.
A plaster replaster starts at $20,000. Vinyl liner replacement runs $5,000 to $15,000. Fiberglass refinishing starts at $10,000. Correct chemistry prevents all of it. The subscription costs less per month than a single bottle of algaecide your pool never needed.
John Cooper
I earned a B.S. in Chemical Engineering and an M.S. in Nuclear Engineering from the University of Florida. I hold five PHTA certifications and operate a field service laboratory of nearly 300 active pools in the Kansas City metro.
Every pool I service is a data point. Every chemistry failure is a case study. I teach chemistry I practiced this morning, not chemistry I used to practice.
The Chemist’s Circle is not a chatbot. It is not a calculator. It is a direct line to a nuclear engineer who has seen nearly every chemistry failure mode a pool can produce, and who is in the field every week watching them happen in real time.
Get a real answer for your pool
Founding membership is limited. When the first 100 seats are gone, the founding rate closes permanently.