Is ph minus profitable to sell on Amazon United Kingdom?

The niche generates £98K/yr across 18 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +703.8%. Flapen's verdict: Worth a look (59/100).

How competitive is the ph minus niche?

11 brands and 25 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 77% of demand.

What do buyers complain about in ph minus?

Top complaints mined from reviews: Functionality-Overall, Advertised Vs Actual Product, Value For Money. The return rate is 0.2%.

When does demand for ph minus peak?

Demand peaks in May–Jun–Jul; the busiest month runs 18.3× the quietest.

What does it cost to enter the ph minus niche?

Listings span £5.37–£19.33; the average listing price is £10.95 (sweet spot $15–$100). The average incumbent carries 753 reviews — the moat a new listing must climb.

ph minus

Worth a look

Shows demand growing +703.8% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Growth

Incredible+703.8%

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

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Conversion

Incredible17.5%

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

Review moat

Good753.06

avg incumbent reviews — the moat a new listing must climb

Brand share

Okay77%

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

Avg price

Okay£10.95

avg listing price — sweet spot $15–$100

Competition

Okay61%

top-5 click share — leaders hold, buyers still browse

Price range

Okay£5.37–£19.33

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

Market size

Bad£98K

£98K/yr · 51K searches

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Signals Trending

According to Flapen's Amazon United Kingdom niche tracking, ph minus is a £98K/yr Amazon United Kingdom market (51K searches/yr). The top 5 brands hold 77% of demand. Demand peaks in May–Jun–Jul. Verdict: Worth a look — 59/100.

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

ph minus market data

Units sold / yr: 10K–13K; avg 500–750/product
Revenue / yr: £110K–£137K; units × avg price
Conversion rate: 17.5%
Avg BSR: #20
Page quality: 0%
Prime: 56%
Sponsored: 83%
Out of stock: 3.3%
Avg brand age: 67 months
Avg seller age: 184 days

Competition & brand share

The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.

Brands

11 rising

Sellers

Top-5 brand share

77%

Top 20: 100%

Top-5 click share

61%

Top 20: 100%

Open market

15%

Clearwater28%
SHATCHI22%
Bluewater Pools & Spa Chemicals10%
SUDS-ONLINE9%
bluewater POOL & SPA CHEMICALS8%
Zagosa8%
Open — no brand owns it (5 brands, 15%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +703.8% search growth over the last 90 days.

Peak months: May, Jun, Jul · busiest ÷ quietest = 18.3×

Open Trend

Top ph minus search terms

ph minus17K/yr +971.6%15.6% conv.
ph minus swimming pool6K/yr >1,000%18.0% conv.
ph minus hot tub8K/yr +184.0%21.1% conv.
ph reducer for swimming pool5K/yr >1,000%19.2% conv.
ph reducer4K/yr +455.1%14.6% conv.
ph decreaser for pool3K/yr >1,000%15.4% conv.
clearwater ph minus3K/yr +844.3%16.3% conv.
ph reducer hot tub4K/yr +198.9%22.2% conv.

All search terms

Top ph minus 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★)1 product missing review or click data not plotted

All 18 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

1.5 Kg pH Minus Reducer Granules for Hot Tubs and Paddling Pools

SHATCHI£7.934.6★223 rev

Clearwater pH Minus Decreaser 1.5 kg Granules for Spa Hot Tub & Swimming Pool Water Treatment Lowers pH & Improves Water Balance

Clearwater£10.295.0★3 rev

7kg pH Minus - Bluewater Swimming Pool & Spa Chemicals - PoolShopUK

Bluewater Pools & Spa Chemicals£15.824.7★398 rev

Bluewater 750g pH Minus - Swimming Pool & Spa Chemicals Above Ground Paddling Pool pH Balancer

bluewater POOL & SPA CHEMICALS£7.454.5★99 rev

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

Newest

by launch date

Clearwater pH Minus Decreaser 1.5 kg Granules for Spa Hot Tub & Swimming Pool Water Treatment Lowers pH & Improves Water Balance

Clearwater£10.293 rev

1mo ago

Safe Splash pH Minus 7kg Granules pH Reducer for Hot Tub & Swimming Pool Water pH Down for Spas Inflatable & Garden Pools Easy Dosing for Clear Comfortable Water

SafeSplash£19.333 rev

3mo ago

Clearwater pH Minus Decreaser 3 kg Granules for Hot Tub Spa & Swimming Pool Water Treatment Lowers pH & Improves Water Balance

Clearwater£16.625 rev

7mo ago

pH Down pH Minus Decreaser 1.5kg For Swimming Pools Hot Tubs & Spas pH Reducer Lowers pH Levels in Pools & Hot Tubs Total Alkalinity TA Control Decreases pH Levels No More Mr Nice Guy

No More Mr Nice Guy£11.3240 rev

2y ago

Deep Blue PH Minus 1Kg pH decreaser

Deep Blue£9.590 rev

2y ago

What buyers say about ph minus

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

What buyers love

Value For Money47%

“Good value. Arrived quick good value for.”

Advertised Vs Actual Product22%

“Works as it should”

Quality-Overall17%

“Great Product”

Efficiency6%

“Works well would recommend”

Heating6%

“Perfect for the hot tub”

Ease Of Use3%

“Really effective and easy to use”

What buyers complain about

Functionality-Overall25%

“Doesnt work”

Advertised Vs Actual Product25%

“Doesnt do what it says”

Value For Money25%

“Waste of money”

Natural Resource Wastage13%

“Absolute waste of of money no chlorine in them did nothing for the water”

Water Resistance13%

“Absolute waste of of money no chlorine in them did nothing for the water”

Top return reasons

Advertised Vs Actual Product33%

Leak-Proof26%

Functionality-Overall9%

Size-Overall7%

Product Condition4%

Defective Material/Parts3%

Contamination2%

Ease Of Cleaning2%

Value For Money2%

Measurement/Reading Accuracy2%

Common questions

Is ph minus profitable to sell on Amazon United Kingdom?: The niche generates £98K/yr across 18 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is +703.8%. Flapen's verdict: Worth a look (59/100).
How competitive is the ph minus niche?: 11 brands and 25 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 77% of demand.
What do buyers complain about in ph minus?: Top complaints mined from reviews: Functionality-Overall, Advertised Vs Actual Product, Value For Money. The return rate is 0.2%.
When does demand for ph minus peak?: Demand peaks in May–Jun–Jul; the busiest month runs 18.3× the quietest.
What does it cost to enter the ph minus niche?: Listings span £5.37–£19.33; the average listing price is £10.95 (sweet spot $15–$100). The average incumbent carries 753 reviews — the moat a new listing must climb.