ph plus hot tub
Worth a lookShows demand growing +306.6% this quarter, but brand-locked demand (top 5 brands take 97% of clicks) keeps it on the watch list.
Growth
Incredible+306.6%90-day search growth — must beat 0% to launch
Conversion
Incredible23.8%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.2%return rate — above 5% kills the launch gate
Review moat
Good1,387.1avg incumbent reviews — the moat a new listing must climb
Market size
Okay£203K£203K/yr · 81K searches
Avg price
Okay£10.59avg listing price — sweet spot $15–$100
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Price range
Bad£6.58–£16.77cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Bad81%top-5 click share — a locked-up shelf
Brand share
Bad97%top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, ph plus hot tub is a £203K/yr Amazon United Kingdom market (81K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 52/100.
Data updated Jul 26, 2026 · scored weekly · How we score niches
ph plus hot tub market data
- Units sold / yr
- 20K–25K
- avg 2,000–2,500/product
- Revenue / yr
- £212K–£265K
- units × avg price
- Conversion rate
- 23.8%
- Avg BSR
- #9
- Page quality
- 0%
- Prime
- 30%
- Sponsored
- 90%
- Out of stock
- 0.0%
- Avg brand age
- 54 months
- Avg seller age
- 184 days
Competition & brand share
The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 rising
Sellers
28
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
81%
Top 20: 100%
Open market
0%
- Clearwater56%
- bluewater POOL & SPA CHEMICALS19%
- SHATCHI10%
- Zagosa8%
- SUDS-ONLINE4%
- AQUASPARKLE3%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +306.6% search growth over the last 90 days.Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 6.8×
Top ph plus hot tub search terms
- ph plus19K/yr
- ph plus hot tub20K/yr
- ph plus for swimming pools10K/yr
- ph increaser for swimming pool7K/yr
- ph increaser for hot tub8K/yr
- clearwater ph plus4K/yr
- ph increaser4K/yr
- pool ph increaser2K/yr
- hot tub ph plus4K/yr
- ph plus hot tub granules3K/yr
Top ph plus hot tub 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.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Clearwater pH Plus Increaser - 1 kg Granules for Hot Tub Spa & Swimming Pool Water Treatment Boosts pH & Improves Water Balance
Clearwater£7.414.6★7,880 rev
Bluewater pH Plus Increaser 5kg Swimming Pool Chemicals & Spa
bluewater POOL & SPA CHEMICALS£15.464.7★693 rev
5kg pH Plus Increaser Granules for Spa Hot Tub Swimming Pool Inflatable & Swim Spa Water - pH Balancer for Safe & Comfortable Bathing
Zagosa£14.314.7★254 rev
BLUEWATER PH INCREASER 2KG PH PLUS
bluewater POOL & SPA CHEMICALS£11.504.6★212 rev
2 Kg pH Plus Increaser Granules for Hot Tubs and Swimming Pools
SHATCHI£8.344.2★19 rev
Newest
by launch date2 Kg pH Plus Increaser Granules for Hot Tubs and Swimming Pools
SHATCHI£8.3419 rev
5kg pH Plus Increaser Granules for Spa Hot Tub Swimming Pool Inflatable & Swim Spa Water - pH Balancer for Safe & Comfortable Bathing
Zagosa£14.31254 rev
BLUEWATER PH INCREASER 2KG PH PLUS
bluewater POOL & SPA CHEMICALS£11.50212 rev
1 Kg pH Plus Increaser Granules for Hot Tubs and Swimming Pools
SHATCHI£6.58118 rev
AQUASPARKLE pH Increaser 1kg Granular Spa Water Treatment Chemical
AQUASPARKLE£8.98669 rev
Trending
90-day click momentum2 Kg pH Plus Increaser Granules for Hot Tubs and Swimming Pools
SHATCHI£8.344.2★
1 Kg pH Plus Increaser Granules for Hot Tubs and Swimming Pools
SHATCHI£6.584.6★
Bluewater 500g pH Increaser Swimming Pool & Spa Chemicals Above Ground Paddling Pool pH Balancer
bluewater POOL & SPA CHEMICALS£7.454.7★
SUDS-ONLINE 5KG pH Plus (Increaser) for Swimming Pools Spas and Hot Tubs
SUDS-ONLINE£16.774.7★
Clearwater TA Plus Alkalinity Increaser for Swimming Pool and Spa Treatment White 19.0 cm*9.7 cm*9.7 cm
Clearwater£9.084.7★
What buyers say about ph plus hot tub
What buyers praise and complain about, mined from review topics.What buyers love
“just what i needed”
“Good value. Arrived quick good value for.”
“Easy to use and works well”
“Good quality strips”
“Fit for the job”
“Perfect for the hot tub”
“use and instructions clear to follow”
“Hot tub ph increaser”
“this will also increase the total alkalinity level in the pool also”
“Good weight and handle size to sprinkle directly into the hot tub with out needing to take scoops etc”
What buyers complain about
“still no effect”
“the reading was higher”
“Value could be better”
Top return reasons
Common questions
- Is ph plus hot tub profitable to sell on Amazon United Kingdom?
- The niche generates £203K/yr across 10 tracked products. 90-day search growth is +306.6%. Flapen's verdict: Worth a look (52/100).
- How competitive is the ph plus hot tub niche?
- 6 brands and 28 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in ph plus hot tub?
- Top complaints mined from reviews: Functionality-Overall, Measurement/Reading Accuracy, Value For Money. The return rate is 0.2%.
- When does demand for ph plus hot tub peak?
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 6.8× the quietest.
- What does it cost to enter the ph plus hot tub niche?
- Listings span £6.58–£16.77; the average listing price is £10.59 (sweet spot $15–$100). The average incumbent carries 1,387 reviews — the moat a new listing must climb.