Sirona Replenish | 4-in-1 Spa Shock Oxidizer
Sirona Replenish is a one-step spa shock oxidizer that does the work of several products at once. Its quick-dissolving formula combines the power of MPS (monopersulfate) with chlorine to shock, oxidize, buffer, and clarify your spa water in a single application — so you spend less time on maintenance and more time actually enjoying the water.
Every soak leaves something behind. Sweat, body oils, lotions, and other organic waste build up in the water, and if they aren't burned off they turn into the problems every spa owner knows: cloudy, dull water, stale odors, and irritation, along with a sanitizer that gets consumed fighting waste instead of protecting you. Shocking is what clears that backlog — it oxidizes the organic load and restores your water to genuinely fresh.
What makes Replenish different is how much it accomplishes in one scoop: the MPS-and-chlorine blend delivers a powerful oxidizing punch, while the built-in buffering and clarifying action helps steady your water and restore its sparkle at the same time. It's especially well suited to mineral purification systems, where a regular oxidizer is essential — and it works beautifully in chlorine and bromine spas too.
Sirona®
Sirona® Brand FAQs
What is Sirona, and what makes it different?
Sirona is a spa care brand built around whole-self wellness. Named for the Celtic goddess of healing waters, it treats your spa as more than a hot tub — a place to restore both body and mind. Sirona offers a full line of sanitizers, balancers, cleaners, clarifiers, and specialty products designed to keep your water safe, simple to maintain, and beautifully clear, so it can take better care of you.
Is Sirona compatible with my current sanitizer?
Yes. Most Sirona products are compatible with all common sanitizer systems, including chlorine, bromine, salt water, ozone, and mineral systems. Sirona also offers the Simply collection, a complete chlorine-free and bromine-free biguanide alternative for those who prefer it. Check each product page for its specific compatibility.
Do I have to use only Sirona products together?
No. Sirona products are designed to work as acoordinated system, but they're also compatible with standard spa water chemistry, so you can introduce them into your existing routine. Many owners start with one or two Sirona products and build from there — using the line together simply makes balancing, sanitizing, and clarifying more seamless.
Is Sirona good for my skin?
Skin comfort is central to Sirona's approach. Balanced, well-maintained water is far gentler on skin and eyes than neglected water, and Sirona's specialty products go further:Spa Nourish is enriched with aloe vera and hyaluronic acid to leave skin soft and refreshed, and the Aromatherapy Bliss line adds terpene-infused, skin-conditioning soaks. The goal is water that cares for you as much as you care for it.
What is the Sirona Simply system?
Sirona Simply is Sirona's chlorine-free and bromine-free line, built around a few core biguanide-based products that sanitize, oxidize, and control waterline buildup without traditional sanitizers. It's designed for spa owners who want gentler water and less chemical odor while keeping their spa clean and clear.
How do I keep my Sirona spa water crystal clear?
Clear water comes from a simple, consistent routine: keep your sanitizer at the proper level, test and balance pH and alkalinity regularly, clean your filter, and use a clarifier at start-up and weekly to polish out fine particles. Sirona's balancers, clarifiers, and specialty cleaners are formulated to work together toward that sparkling, sanctuary-clear result.
About Sirona®
Sirona takes its name from the Celtic goddess of healing waters — and that story is the heart of the brand. Sirona believes your spa is about far more than soothing tired muscles: the warm, swirling water has a genuine restorative effect on both body and mind, and the right water care is what lets you fully ease into that experience. It's spa care reimagined around whole-self wellness.
Created by longtime spa care experts, Sirona offers a complete, thoughtfully designed line — sanitizers, balancers, clarifiers, cleaners, and specialty products, plus the chlorine-free, bromine-free Sirona Simply collection and skin-nourishing extras like aloe-infused conditioners and aromatherapy soaks. Every product is built to be safe, simple, and effective, working together to keep your water clean, balanced, and beautifully clear. The philosophy is simple: take good care of your spa water, and it will take even better care of you.
