Right, chlorine dosing this is one of those questions everyone asks once they’ve actually had their SaluSpa a week or two and realised “oh, I actually have to look after this water, don’t I.” Fair enough, nobody mentions it on the box. The honest answer to how many chlorine tablets in SaluSpa depends on your tub’s size and how often it’s being used, but there’s a sensible range that works for most setups, and I’ll walk through it properly rather than just throwing a number at you.
How Many Chlorine Tablets In SaluSpa
For a standard inflatable hot tub, most people use somewhere between 1 to 3 chlorine tablets every few days, depending on the size of the tub and how many people have been using it. That’s deliberately vague because dosing isn’t really about a fixed number — it’s about hitting the right chlorine level and keeping it there, which test strips will tell you far better than any tablet count ever will.
Recommended Chlorine Levels
| Measurement | Target Range |
|---|---|
| Chlorine level (free) | 3–5ppm |
| pH levels | 7.2–7.6 |
| Total alkalinity | 80–120ppm |
The 3-5ppm chlorine range is the one that actually matters. Tablets are just the delivery method what you’re really managing is that number on the test strip.
Tablet Dosage by Tub Size
| Tub Size | Typical Tablet Use |
|---|---|
| 2-person inflatable | 1 tablet every 3–4 days |
| 4-person inflatable | 1–2 tablets every 2–3 days |
| 6-person inflatable | 2–3 tablets every 2–3 days |
These are starting points, not gospel. Heavy use (parties, kids splashing about) burns through chlorine faster than a quiet soak alone, so you’ll need to dose a bit more often in those cases.
How to Actually Dose It
- Test the water first with chlorine test strips before adding anything don’t just dose blind
- Drop tablets into a floating dispenser or chemical floater, not directly into the water
- Let the pump circulate for at least 30 minutes before retesting
- Check the reading sits within 3-5ppm
- Adjust pH afterwards if it’s drifted, since chlorine tablets are often slightly acidic
Chlorine Tablets vs Bromine
People ask this constantly, so worth covering quickly.
| Factor | Chlorine | Bromine |
|---|---|---|
| Speed of action | Faster bacteria control | Slightly slower |
| Smell | Stronger | Milder |
| Cost | Generally cheaper | Slightly pricier |
| Stability in heat | Breaks down faster in warm water | More stable at spa temperatures |
Chlorine’s the more common choice for inflatable hot tubs simply because it’s cheaper and works fast, but bromine holds up better in the warmer water spas typically run at both work fine if you keep on top of testing.
pH and Alkalinity Matter Just as Much
Here’s the bit people skip and then wonder why their chlorine “isn’t working.” If your pH is off, chlorine doesn’t sanitise properly no matter how many tablets you chuck in.
- Test pH alongside chlorine every time, not separately
- If pH is too high, chlorine becomes far less effective at killing bacteria
- If pH is too low, it can irritate skin and damage equipment over time
- Total alkalinity acts as a buffer keep it in range so pH doesn’t swing wildly
Weekly Water Care Checklist
| Task | Frequency |
|---|---|
| Test chlorine and pH | 2–3 times per week |
| Add chlorine tablets | As needed to maintain 3-5ppm |
| Check alkalinity | Weekly |
| Shock treatment | Weekly or after heavy use |
| Filter rinse/replace | Every 2–4 weeks |
Signs You’ve Got the Dosage Wrong
- Strong chemical smell usually means chlorine’s reacted with contaminants rather than too much being added
- Cloudy water often a pH or alkalinity issue, not purely chlorine
- Skin or eye irritation could mean chlorine’s too high, or pH is badly off
- No smell at all and water looks fine but feels “off” chlorine might actually be too low, worth testing rather than guessing
FAQs
How many chlorine tablets should I use in my SaluSpa?
Usually 1–3 tablets every few days depending on tub size, but always confirm with test strips.
What chlorine level should I be aiming for?
Between 3-5ppm is the standard target range for hot tubs.
Can I use too many chlorine tablets?
Yes, over-dosing can irritate skin and throw off pH balance, so test before adding more.
Should I check pH every time I add chlorine?
Yes, pH affects how well chlorine actually works, so they need checking together.
Is bromine better than chlorine for hot tubs?
Neither’s strictly better — bromine’s more stable in warm water, chlorine works faster and costs less.
Conclusion
There’s no single magic number for chlorine tablets it depends on your tub size, how often it’s used, and what your test strips are actually telling you. Aim for that 3-5ppm range, keep pH in check alongside it, and you’ll avoid most of the common water problems people run into. Test regularly rather than guessing, and dosing becomes second nature pretty quickly. Looking for a hot tub with easier water management built in? Check out our inflatable hot tub range, including the Corsica and Tahiti.
