Is ph down profitable to sell on Amazon United States?

The niche generates $114K/yr across 14 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +30.4%. Flapen's verdict: Skip it (49/100).

How competitive is the ph down niche?

8 brands and 32 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 95% of demand.

What do buyers complain about in ph down?

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

When does demand for ph down peak?

Demand peaks in Jul–Aug–Sep; the busiest month runs 3.7× the quietest.

What does it cost to enter the ph down niche?

Listings span $10.73–$32.96; the average listing price is $18.01 (sweet spot $15–$100). The average incumbent carries 4,323 reviews — the moat a new listing must climb.

ph down

Skip it

Brand-locked demand (top 5 brands take 95% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Conversion

Great11.7%

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

Avg price

Great$18.01

avg listing price — sweet spot $15–$100

Price range

Great$10.73–$32.96

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

Growth

Good+30.4%

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

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Market size

Okay$114K

$114K/yr · 54K searches

Review moat

Bad4,322.71

avg incumbent reviews — the moat a new listing must climb

Competition

Bad72%

top-5 click share — a locked-up shelf

Brand share

Bad95%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, ph down is a $114K/yr Amazon United States market (54K searches/yr). The top 5 brands hold 95% of demand. Demand peaks in Jul–Aug–Sep. Verdict: Skip it — 49/100.

Data updated Jul 14, 2026 · scored weekly · How we score niches

ph down market data

Units sold / yr: 6K–8K; avg 500–750/product
Revenue / yr: $108K–$144K; units × avg price
Conversion rate: 11.7%
Avg BSR: #591
Page quality: 0%
Prime: 100%
Sponsored: 86%
Out of stock: 0.0%
Avg brand age: 82 months
Avg seller age: 162 days

Competition & brand share

The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.

Brands

8 rising

Sellers

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

72%

Top 20: 100%

Open market

General Hydroponics56%
Microbe Life Hydroponics11%
FoxFarm11%
Bloom City10%
Humboldts Secret4%
TPS NUTRIENTS4%
Open — no brand owns it (2 brands, 5%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +30.4% search growth over the last 90 days.

Peak months: Jul, Aug, Sep · busiest ÷ quietest = 3.7×

Open Trend

Top ph down search terms

ph down for plants37K/yr +37.2%11.3% conv.
ph down hydroponic10K/yr +2.2%11.4% conv.
general hydroponics ph down6K/yr +43.1%16.1% conv.

All search terms

Top ph down 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 14 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

General Hydroponics HGC722120 Liquid Premium Buffering for pH Stability Quart Orange

General Hydroponics$15.134.8★10,930 rev

General Hydroponics pH Down Liquid Premium Buffering For pH Stability 1-Gallon

General Hydroponics$32.964.8★10,930 rev

Microbe Life Hydroponics pH Down pH Control Liquid Premium Buffering for pH Stability Decreases pH Levels Use with Any Feeding Systems Including Hydroponics or Soil 16 Ounces

Microbe Life Hydroponics$13.054.0★894 rev

FoxFarm Cultivation Nation pH Down for Plants Nutrient Solutions - Formulated with Citric Acid for Adjustment - Ideal for Soil & Hydroponics Lowers pH Levels of Nutrient Solution - 1 Pint

FoxFarm$18.414.5★519 rev

General Hydroponics Ph Control Kit

General Hydroponics$20.774.7★28,701 rev

Newest

by launch date

YINMIK General Hydroponics pH Down Liquid pH Control Liquid Decreases pH Levels 250ml Premium Buffering for pH Stability Suitable for All Hydroponics Feeding Systems Both for Soil and Water

YINMIK$10.7338 rev

11mo ago

TPS NUTRIENTS Ultra Strength pH Down Professional Acid pH Adjuster for Soil and Hydroponics Buffering and Stability Control 8 oz (250mL)

TPS NUTRIENTS$11.8945 rev

2y ago

Humboldts Secret pH Down for Plants | Liquid pH Adjuster and Balancer for Soil Coco Hydroponics | Concentrated Phosphoric Acid Solution Supporting Nutrient Uptake and Strong Growth | 32 Ounce

Humboldts Secret$20.54469 rev

3y ago

Bloom City pH Down Liquid pH Adjuster 8 oz

Bloom City$11.941,309 rev

4y ago

FOLLOWIN pH Up and Down Control Kit for Hydroponics Soil Gardens & Aquariums - Concentrated Liquid pH Adjuster Set (9 oz + 9 oz) with pH Indicator - Balanced Nutrient Solution for Plants

FOLLOWIN$20.34722 rev

5y ago

What buyers say about ph down

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

What buyers love

Advertised Vs Actual Product17%

“As advertised”

Ease Of Use16%

“Easy to Use”

Plant Growth15%

“This has helped me grow some very impressive plants”

Quality-Overall14%

“Overall I'm very happy with the results”

Value For Money14%

“Worth every penny”

Strength9%

“the bottles are sturdy”

Durability2%

“so the bottle lasts a long time”

Adjustability/Rotatability/Reclining2%

“I can adjust to get it down to 6.5 with no problem”

Leak-Proof1%

“Arrived no leaks”

Size-Overall1%

“fit great”

What buyers complain about

Functionality-Overall28%

“Did not work”

Strength10%

“its not super strong”

Value For Money7%

“this one just seemed like a waste of money”

Quality-Overall7%

“Cheap”

Contamination6%

“As the solution may cause burns”

Plant Growth5%

“my plants needed some help as they weren't very happy”

Leak-Proof4%

“one bottle had leaked”

Advertised Vs Actual Product3%

“Did not come with all things advertised failed to put the ph tester in the packet as was as the pipets and cups”

Measurement/Reading Accuracy3%

“Even though the PH testing kit is garbage the PH up”

Instructions/User Manual/Troubleshooting3%

“This comes with ineffective instructions”

Top return reasons

Functionality-Overall34%

Leak-Proof18%

Advertised Vs Actual Product11%

Defective Material/Parts7%

Value For Money6%

Contamination4%

Product Condition3%

Quality-Overall2%

Eco Friendliness2%

Measurement/Reading Accuracy2%

Common questions

Is ph down profitable to sell on Amazon United States?: The niche generates $114K/yr across 14 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +30.4%. Flapen's verdict: Skip it (49/100).
How competitive is the ph down niche?: 8 brands and 32 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in ph down?: Top complaints mined from reviews: Functionality-Overall, Strength, Value For Money. The return rate is 0.2%.
When does demand for ph down peak?: Demand peaks in Jul–Aug–Sep; the busiest month runs 3.7× the quietest.
What does it cost to enter the ph down niche?: Listings span $10.73–$32.96; the average listing price is $18.01 (sweet spot $15–$100). The average incumbent carries 4,323 reviews — the moat a new listing must climb.