
FROG® StoMPS™ Non-Chlorine Oxidizing Shock for Hot Tubs & Spas
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Key Features & Benefits
Non-Chlorine Shock
Potassium monopersulfate oxidizer that adds no chlorine and no cyanuric acid, per FROG.
TruDose Cap™ Measuring
Engineered for seamless compatibility with original mounting points for secure placement.Built-in cap measurements and a bottle dosage chart for your spa's gallon size.
Sanitizer Compatibility
FROG states compatibility with chlorine, bromine, ozone, UV and salt generators and all FROG sanitizing systems.
Quick Return to the Spa
FROG states you can be back in the spa in as little as 15 minutes.
Weekly Shock Routine
FROG says weekly shocking is beneficial, or once a month with FROG @ease.
Single-Bottle Convenience
Granular shock in one bottle with a TruDose Cap; 2 lb per our product record.
Product Overview
FROG® StoMPS™ is a granular non-chlorine shock for hot tubs and swim spas. Its active ingredient is potassium monopersulfate (MPS), an oxidizer that breaks down the oils, sweat and other contaminants that cloud water and strain your sanitizer, without adding chlorine or cyanuric acid.
It comes in a bottle with a FROG TruDose Cap™ and a dosage chart, so you measure the dose for your spa's size. StoMPS is a shock, not a sanitizer, so use it alongside your sanitizer. Its Safety Data Sheet carries the signal word DANGER; see Safety & Handling below for directions and precautions.
Frequently Asked Questions
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It is a granular non-chlorine shock (potassium monopersulfate) for hot tubs and swim spas. It oxidizes contaminants such as oils and sweat and gives your sanitizer a boost without adding chlorine or cyanuric acid.
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Check the volume chart on the bottle and fill the TruDose Cap to the line for your gallon size. With the jets running, pour it in slowly around the perimeter and circulate with the cover off for 15 minutes.
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FROG says a weekly shock routine is beneficial for most hot tubs and swim spas, and that with FROG @ease you can reduce shocking to once a month.
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FROG states non-chlorine shock lets you be back in the spa in as little as 15 minutes. Follow the directions on your bottle, which call for 15 minutes of circulation with the cover off.
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No. A shock oxidizes contaminants and boosts your sanitizer, but it is not a sanitizer. Keep using your chlorine, bromine, mineral or other sanitizing system.
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FROG states it is compatible with chlorine, bromine, ozone, UV and salt generators, and with all FROG sanitizing systems.
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No. It is a non-chlorine shock based on monopersulfate, so it does not add chlorine or cyanuric acid.
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The manufacturer's Safety Data Sheet lists the signal word Danger and warns of severe skin burns and eye damage. Wear gloves and eye protection, avoid breathing dust, and store it locked up.
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FROG lists it as a non-chlorine shock for hot tubs or swim spas.







