Is hot tub test strips profitable to sell on Amazon United Kingdom?

The niche generates £437K/yr across 15 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +613.0%. Flapen's verdict: Worth a look (57/100).

How competitive is the hot tub test strips niche?

13 brands and 47 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 83% of demand.

What do buyers complain about in hot tub test strips?

Top complaints mined from reviews: Quality-Overall, Functionality-Overall, Color. The return rate is 0.2%.

When does demand for hot tub test strips peak?

Demand peaks in May–Jun–Jul–Aug; the busiest month runs 10.7× the quietest.

What does it cost to enter the hot tub test strips niche?

Listings span £4.19–£11.94; the average listing price is £8.17 (sweet spot $15–$100). The average incumbent carries 6,648 reviews — the moat a new listing must climb.

hot tub test strips

Worth a look

Shows demand growing +613.0% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Growth

Incredible+613.0%

90-day search growth — must beat 0% to launch

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Conversion

Incredible16.3%

search→purchase rate — share of searches ending in a sale

Market size

Good£437K

£437K/yr · 328K searches

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Brand share

Okay83%

top-5 brand share — brands hold most of the demand

Review moat

Bad6,648.2

avg incumbent reviews — the moat a new listing must climb

Avg price

Bad£8.17

avg listing price — sweet spot $15–$100

Competition

Bad74%

top-5 click share — a locked-up shelf

Price range

Bad£4.19–£11.94

cheapest to priciest tracked listing — scored on the share inside $15–$100

Signals Trending

According to Flapen's Amazon United Kingdom niche tracking, hot tub test strips is a £437K/yr Amazon United Kingdom market (328K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 57/100.

Data updated Jul 26, 2026 · scored weekly · How we score niches

hot tub test strips market data

Units sold / yr: 60K–80K; avg 4,000–5,000/product
Revenue / yr: £490K–£654K; units × avg price
Conversion rate: 16.3%
Avg BSR: #25
Page quality: 0%
Prime: 100%
Sponsored: 80%
Out of stock: 0.0%
Avg brand age: 42 months
Avg seller age: 180 days

Competition & brand share

The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.

Brands

13 rising

Sellers

Top-5 brand share

83%

Top 20: 100%

Top-5 click share

74%

Top 20: 100%

Open market

14%

EASYTEST32%
Clearwater24%
CANADIAN SPA CO.17%
RUNBO5%
AquaChek4%
KIMIBST3%
Open — no brand owns it (7 brands, 14%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +613.0% search growth over the last 90 days.

Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 10.7×

Open Trend

Top hot tub test strips search terms

hot tub test strips101K/yr +289.9%17.3% conv.
pool test strips47K/yr >1,000%14.5% conv.
chlorine test strips33K/yr +816.9%15.9% conv.
pool testing strips26K/yr >1,000%16.1% conv.
swimming pool test strips12K/yr >1,000%15.3% conv.
pool testing kit12K/yr >1,000%4.7% conv.
spa test strips10K/yr +795.0%14.1% conv.
test strips hot tub spa11K/yr +447.7%14.4% conv.
pool dip test sticks7K/yr >1,000%13.9% conv.
hot tub testing strips10K/yr +228.7%17.0% conv.

All search terms

Top hot tub test strips products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 15 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

EASYTEST Hot Tub Test Strips 150 Strips Pool and Spa Test for pH Total Alkalinity Free Chlorine and Bromine Accurate 3 in 1 Pool Water Testing Kit

EASYTEST£8.904.6★24,823 rev

Pool and Spa Test Strips 50 Counts: 3-Way Hot Tub Test Kit Testing for Free Chlorine/Bromine Total Alkalinity and pH. Easy and Accurate Spa Test Strips for Hot Tub.

CANADIAN SPA CO.£4.193.9★636 rev

Clearwater Hot Tub Pool and Spa Test Strips 4 in 1 - Measures Chlorine Bromine PH and Total Alkalinity (3-in-1)

Clearwater£7.234.6★14,001 rev

Clearwater Hot Tub Pool and Spa Test Strips x 100-3 in 1 - Measures Chlorine PH and Total Alkalinity

Clearwater£10.204.7★968 rev

Clearwater Hot Tub Pool and Spa Test Strips x 25 - Measures Chlorine Bromine PH and Total Alkalinity (3-in-1)

Clearwater£5.294.6★10,300 rev

Newest

by launch date

7 in 1 Hot Tub Test Strips 150 Strips Pool Test Strips for Swimming Pool & Spa Accurately Test pH Free Chlorine Total Chlorine Bromine Total Alkalinity Total Hardness Cyanuric Acid

Dr.Tim.Wang£11.943,455 rev

4mo ago

KIMIBST Pool Test Strips: 200CT 7-Way Professional Hot Tub & Spa Test Kit for Bromine pH Total Chlorine & Hardness Cyanuric Acid and More Accurate Testing Above Ground Inground Swimming Pool Water

KIMIBST£10.18103 rev

6mo ago

Hot Tub Test Strips 7-In-1 (150Pcs)| Ph Test Strips For Swimming Pool & Spa | Pool Water Testing Kit For Chlorine Bromine Ph Hardness More - All In 1 Swimming Pool Test Strips

WLCTJIAYOU£7.06135 rev

1y ago

Pool Test Strips 100 Strips Pool and Hot Tub Test Strips Swimming Pool Test Strips for Total Alkalinity pH Free Chlorine(Bromine) Cyanuric Acid-Pool Spa Water Test -Quick and Accurate Results

DIPSTIK£6.19801 rev

2y ago

150 Hot tub test strips Pool and Spa 3 in 1 Pack of 150 Chlorine PH Total Alkalinity. Accurate 3 in 1 Pool Water Testing Kit

Generic£8.14121 rev

2y ago

What buyers say about hot tub test strips

What buyers praise and complain about, mined from review topics.

What buyers love

Value For Money25%

“Good value for money and consistent”

Ease Of Use23%

“Easy to use”

Advertised Vs Actual Product17%

“Does the job perfectly”

Quality-Overall11%

“Excellent quality product, easy to use and accurate too”

Efficiency5%

“effective test strips”

Measurement/Reading Accuracy4%

“Cant beat this brand, always reliable and fairly accurate”

Color2%

“the colours are easy to read for me”

Filtration1%

“other than changing filter no problems”

Instructions/User Manual/Troubleshooting1%

“include clear instructions”

Adjustability/Rotatability/Reclining1%

“Good for chlorine adjustment”

What buyers complain about

Quality-Overall26%

“Poor quality test strips”

Functionality-Overall18%

“Don't work”

Color15%

“colours wasnt changing on the strip”

Measurement/Reading Accuracy12%

“DANGEROUS - inaccurate pH reading”

Value For Money12%

“a bit cheaper with Amazon”

Moist/Dry6%

“Doesnt change at all looks like moisture has got in to the packets”

Top return reasons

Functionality-Overall41%

Color12%

Defective Material/Parts9%

Advertised Vs Actual Product6%

Measurement/Reading Accuracy6%

Value For Money6%

Quality-Overall5%

Leak-Proof3%

Size-Overall2%

Compatibility-Overall2%

Common questions

Is hot tub test strips profitable to sell on Amazon United Kingdom?: The niche generates £437K/yr across 15 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +613.0%. Flapen's verdict: Worth a look (57/100).
How competitive is the hot tub test strips niche?: 13 brands and 47 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 83% of demand.
What do buyers complain about in hot tub test strips?: Top complaints mined from reviews: Quality-Overall, Functionality-Overall, Color. The return rate is 0.2%.
When does demand for hot tub test strips peak?: Demand peaks in May–Jun–Jul–Aug; the busiest month runs 10.7× the quietest.
What does it cost to enter the hot tub test strips niche?: Listings span £4.19–£11.94; the average listing price is £8.17 (sweet spot $15–$100). The average incumbent carries 6,648 reviews — the moat a new listing must climb.