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You’re exploring Pillar 4: Oxidation—the quiet helper that breaks down contaminants so your sanitizer doesn’t have to do all the work.

Pillar 4: Oxidation—The Quiet Helper Working While You Sleep

Sanitizer kills germs; oxidation cleans up after everyone. It breaks down body oils, lotions, and used-up sanitizer byproducts so your sanitizer works less hard and your water feels fresher. A real work-reducer — but always a helper, never a replacement for sanitizer.

The three tools, plainly

  • Ozone — a gas injected into the water that oxidizes contaminants around the clock. The workhorse; standard or optional on most quality spas.
  • UV-C — a light chamber the water passes through. One honest thing to know: the bulb loses strength long before it stops glowing, so replace it on your manufacturer’s schedule even if it “looks fine.”
  • AOP — combines ozone and UV-C to create short-lived, highly reactive oxidizers in the treatment chamber. It can further reduce contaminants and byproducts, which many owners notice as fresher-feeling, fresher-smelling water.

Good, better, best

This is the one pillar where you can level up the same job:

  • Good — Ozonator. Standard or optional across Artesian’s series; every series comes ozone-ready.
  • Better — Crystal ProPure™. Advanced Plasma Gap ozone, offered on Artesian Elite and TidalFit.
  • Best — Diamond AOP™. Ozone + UV-C combined; offered on Artesian Elite, Island, South Seas, and TidalFit.

AOP and salt — friends or rivals?

Different pillars, different jobs: AOP is an oxidation upgrade; salt is a sanitizer-delivery choice. You don’t pick between them on merit — you check compatibility. Some salt systems (like Blu-Fusion) install in the ozone line, so the ozonator comes out; some monitoring systems don’t pair with ozone at all. Planning to combine systems? Ask us first — we’ll map what works together on the spa you want.

Does ozone mean I can skip chlorine or bromine?
No. Ozone destroys a lot of junk in the moment, but it doesn’t maintain the lasting protective level your water needs between soaks. Every spa needs a measurable sanitizer at all times — oxidation just means that sanitizer works less hard.
Is AOP worth the upgrade on a hot tub?
For heavy users, sensitive skin, or anyone who values that “fresh water” feel, it’s often the favorite upgrade in the lineup. For a couple who soaks occasionally, a standard ozonator plus good habits may be plenty. It’s a comfort-and-workload upgrade, not a requirement.
Does AOP make hot tub water softer?
No — AOP doesn’t change water hardness. What owners describe as “softer” is usually water with fewer built-up byproducts, which can genuinely feel and smell better. Nice result, wrong word.

Already own a spa with DEL, AquaNova or Diamond AOP?

If your existing AOP unit has failed, our sister store carries the current 240-volt DEL AOP Spa 2 replacement for compatible AquaNova and Diamond AOP-equipped hot tubs and swim spas. Compatibility, voltage, plumbing and electrical connections should be verified before ordering.

View the DEL AOP Spa 2 and AquaNova replacement system at EZHotTubParts →

Your sanitizer protects the water, and oxidation lightens its workload. Now see how three balance numbers help hold the entire system together.

Continue to Pillar 5: Balance →

Done exploring oxidation and ready to compare ozone and AOP options in actual hot tubs? Let’s build your custom spa setup plan.

Questions? Call or text (763) 200-7727. Need ozone or UV replacement parts? We stock those too.

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