Description
Measured Non-Chlorine Shock for Hot Tubs and Swim Spas, Back in the Water in 15 Minutes
FROG StoMPS is a non-chlorine oxidizing shock (MPS) for hot tubs and swim spas. It breaks down sweat, oils, lotions and other contaminants that cloud the water and use up your sanitizer, without adding chlorine or cyanuric acid.
The 2 lb bottle comes with the FROG TruDose Cap and a dose chart printed on the label. Find your gallons, pour that amount into the cap and add it with the jets on. After 15 minutes of circulation, you can get back in.
Shock Tonight, Soak Tonight
Chlorine shock can keep a hot tub closed for hours while the level comes down. StoMPS is chlorine-free, so FROG's directions only ask you to run the jets for 15 minutes with the cover off before anyone gets back in. That makes it easy to shock right after a soak or before guests arrive.
No Cyanuric Acid Buildup
FROG points out that the stabilized chlorine often used in hot tubs contains cyanuric acid, which builds up quickly in a small, covered body of water and makes chlorine less effective. StoMPS oxidizes without adding any, so routine shocking doesn't add to that buildup.
The Right Dose for Any Size
Single-dose packets are made for an average hot tub. StoMPS is measured by the gallon instead. The chart runs from ⅛ cup for 200 gallons up to 1½ cups for 2,500 gallons, so it fits a two-person tub, a large family spa or a swim spa.
Gives Your Sanitizer a Boost
Oxidizing contaminants takes load off your chlorine, bromine or FROG minerals so they can keep killing bacteria. FROG's product listing adds that it reduces the chemical smell of chlorine or bromine and works with chlorine, bromine or salt systems.
Key Features and Benefits
- Non-Chlorine MPS ShockOxidizes organics without adding chlorine.
- 2 lb BottleGranular, fast-dissolving and odorless.
- FROG TruDose CapCup markings from ⅛ to 1 cup; seals the bottle.
- Chart on the Label200 to 2,500 gallons, hot tubs and swim spas.
- 15-Minute Re-EntryJets on, cover off, then soak.
- No Cyanuric AcidNothing to build up between drains.
Product Details
| Product Detail | Information |
|---|---|
| Brand | FROG (King Technology, Inc.) |
| Product | FROG StoMPS Non-Chlorine Oxidizing Shock |
| Product Type | Non-chlorine oxidizing shock (MPS) |
| Active Ingredient (label) | Potassium monopersulfate 45.0%; other ingredients 55.0% |
| Size | 2 lb bottle (catalog) |
| Form | Granular solid, odorless (SDS) |
| Use In | Hot tubs and swim spas |
| Dosing Method | FROG TruDose Cap with cup markings, amount read from the chart on the bottle |
| Dose Chart | On the bottle for 200–2,500 gallons; reproduced in How to Use |
| Re-Entry Time | After 15 minutes of jet circulation with the cover off (FROG directions) |
| How Often | Weekly for most hot tubs, after heavy use, or monthly with FROG @ease (FROG) |
| Adds Chlorine or Cyanuric Acid | No |
| Compatible Systems | FROG @ease, FROG Serene and FROG Filter Mate; chlorine, bromine or salt hot tubs |
| Signal Word (label) | Danger; keep out of reach of children |
| Shipping (DOT, per SDS) | UN3260, Class 8 corrosive solid, Packing Group II |
| Also Included In | FROG Balancing Basics Kit (same 2 lb bottle) |
| Manufacturer Part Number | 01-14-6230 |
| Store SKU | 01-14-6230 |
| UPC | 722906062608 |
| Image Alt Text | FROG StoMPS non-chlorine oxidizing shock 2 lb bottle with TruDose Cap for hot tubs and swim spas |
How to Use FROG StoMPS
- Balance first: Make sure total alkalinity, pH and hardness are in range. Shock works best in balanced water.
- Find your dose: Look up your hot tub or swim spa gallons on the bottle chart, then pour that amount into the TruDose Cap.
- Jets on, no one in: With the jets running and the hot tub empty of people, pour the measured StoMPS into the water.
- Cover off for 15 minutes: Keep the cover off and let the jets circulate for 15 minutes to mix it in.
- Soak and repeat weekly: Get back in once it has circulated. Shock weekly, after heavy use, or monthly if you use FROG @ease.
FROG StoMPS Dose Chart (from the bottle)
| Hot Tub or Swim Spa Gallons | Amount in the TruDose Cap |
|---|---|
| 200 | ⅛ cup |
| 400 | ¼ cup |
| 600 | ½ cup |
| 1,000 | ¾ cup |
| 1,300 | ¾ cup |
| 1,600 | 1 cup |
| 1,900 | 1¼ cups |
| 2,200 | 1½ cups |
| 2,500 | 1½ cups |
This is FROG's chart for a routine shock. If your gallons fall between two rows, use the closer row. Measure in the TruDose Cap and pour with the jets on.
FROG StoMPS Directions at a Glance
| Step | What the Directions Say |
|---|---|
| When to use | Weekly, after heavy use, or monthly with FROG @ease |
| How much | Amount for your gallons from the chart, measured in the TruDose Cap |
| How to add | Jets on, hot tub unoccupied, cover off |
| Before soaking | Circulate 15 minutes |
| Goal | Clear, fresh water with less load on your sanitizer |
FROG StoMPS or FROG Maintain?
| FROG StoMPS (this listing) | FROG Maintain | |
|---|---|---|
| Format | 2 lb bottle with TruDose Cap | Single-dose pouches |
| Dose | Measured by gallons from the chart | One pouch per dose |
| Sizes covered | Chart from 200 to 2,500 gallons | Hot tubs (swim spa version sold separately) |
| Type | Non-chlorine MPS oxidizing shock | Non-chlorine MPS oxidizing shock |
| Best for | Swim spas, large tubs, frequent shocking | Grab-and-go weekly shock in a standard hot tub |
FROG calls StoMPS its strongest dose of MPS and suggests Maintain packets for a quick, easy shock.
Compatibility Notes
Before You Buy
- Works with FROG @ease, FROG Serene and FROG Filter Mate systems, and with chlorine, bromine or salt hot tubs.
- Made for hot tubs and swim spas. The bottle chart covers 200 to 2,500 gallons.
- StoMPS oxidizes but doesn't sanitize. Keep your usual sanitizer system running.
- Biguanide (non-chlorine, non-bromine) sanitizer systems aren't listed by FROG. Check with your system's maker before using any MPS shock with one.
Why Choose FROG StoMPS
It gives you FROG's strongest MPS shock in a bottle you can dose to the exact size of your hot tub or swim spa, and you're back in the water 15 minutes later. Shop more FROG and King Technology water care, or compare every non-chlorine shock for hot tubs at HotTubPirate.com.
Ideal For
- Weekly shocking in chlorine, bromine or salt hot tubs
- Swim spas and larger hot tubs
- FROG @ease owners who shock once a month
- Quick touch-ups after a busy soak
Frequently Asked Questions
Should I buy FROG StoMPS or FROG Maintain?
Both are FROG non-chlorine MPS shocks. FROG calls StoMPS its strongest dose of MPS, sold in a 2 lb bottle you measure by gallons. Maintain comes in single-dose pouches for a quick weekly shock in a standard hot tub.
How much StoMPS do I add?
Use the chart on the bottle, which is repeated in the table above. A 400-gallon hot tub takes ¼ cup, 600 gallons takes ½ cup and a 1,600-gallon swim spa takes 1 cup, all measured in the TruDose Cap.
How often should I shock with StoMPS?
FROG says a weekly shock helps most hot tubs. Add an extra dose after a party or several soaks in a row. With FROG @ease, its self-regulating chlorine lets you cut back to about once a month.
Can we soak the same evening we shock with StoMPS?
Yes, that's one of the main reasons to choose a non-chlorine shock. Add the dose while the tub is empty, keep the jets running with the cover open, and a quarter hour later the water is ready for the next soak.
Why does FROG call StoMPS its strongest MPS?
FROG's water balancing tips call StoMPS the strongest dose of MPS (monopersulfate) in its line. The label lists 45% potassium monopersulfate, and the bottle lets you dose larger tubs and swim spas in one measured pour.
Is StoMPS made for swim spas too?
Yes. It's labeled for hot tubs and swim spas, and the chart goes up to 2,500 gallons: 1¼ cups at 1,900 gallons and 1½ cups at 2,200 to 2,500 gallons.
Can I use StoMPS with FROG @ease SmartChlor?
Yes. FROG lists StoMPS as compatible with the FROG @ease Floating System. Because @ease self-regulates its chlorine, FROG says you can shock about once a month instead of weekly.
Does StoMPS work in a bromine hot tub or with FROG Serene?
Yes. FROG lists FROG Serene, its bromine system, as compatible, and FROG's product listing says StoMPS works with chlorine, bromine or salt. In bromine tubs, MPS shock also helps reactivate spent bromide.
Can I use StoMPS in a saltwater hot tub?
Yes. FROG's product listing names salt systems along with chlorine and bromine. Use the same chart amounts and keep your salt system's own settings and directions.
Will StoMPS change my chlorine test strip reading?
It can for a short while. Public health guidance notes that non-chlorine shock may affect chlorine test accuracy. Test before you shock, or wait until the water has circulated before reading the strip.
How do I know my hot tub needs a shock?
Water that looks dull, smells strong or foams, or a busy soak, are common signs. If total chlorine reads higher than free chlorine, used-up sanitizer is building up, and a non-chlorine shock helps clear it.
What markings are on the TruDose Cap?
The translucent cap has cup marks for ⅛, ¼, ½, ¾ and 1 cup, which line up with every amount on the StoMPS chart. It also seals the bottle tightly between uses.
Why does StoMPS have a Danger label?
Concentrated MPS is corrosive. The label carries the Danger signal word, and the Safety Data Sheet warns of severe skin burns and eye damage. That's why you measure it in the cap and pour it straight into the water, never handle it with bare hands.
Is this the same StoMPS that comes in the FROG Balancing Basics Kit?
Yes. The kit includes this same 2 lb StoMPS bottle with the TruDose Cap, along with FROG's four balancers. Buy this bottle on its own when the one from your kit runs out.
How should I store an open bottle?
Close the TruDose Cap tightly and keep the bottle in a cool, dry, well-ventilated place away from children and pets. The Safety Data Sheet says to keep it away from heat, combustibles and halogens, which include chlorine and bromine products.
Safety Notes
Handle With Care
- Labeled Danger: corrosive. Per its Safety Data Sheet, StoMPS causes severe skin burns and eye damage and is harmful if swallowed or in contact with skin. Wear gloves and eye protection, and don't breathe the dust.
- If it gets in your eyes, rinse cautiously with water for several minutes, remove contact lenses if easy to do, keep rinsing and get medical attention right away.
- Add StoMPS to the water, never water to StoMPS, and only with no one in the hot tub.
- Never mix it with other chemicals, including chlorine, bromine or other FROG products. Add one product at a time.
- Keep out of reach of children and pets. Close the TruDose Cap tightly and store the bottle in a cool, dry, well-ventilated place.
- Read the full label and Safety Data Sheet before use.
Product Documents
Download the FROG StoMPS Safety Data Sheet for hazard, first aid, storage and shipping information. Dosing amounts are printed on the bottle's chart and repeated in the dose table above.