---
title: "Ph Down — $114K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/ph-down"
last_updated: "2026-08-11T00:46:48.087Z"
locale: en
meta:
description: "Niche score 49/100 · $114K/yr market · 54K searches/yr · $18.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 49/100 · $114K/yr market · 54K searches/yr · $18.01 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Ph Down — $114K/yr Amazon US Niche (2026) - Flapen"
---
# **ph down**
**Skip it**
Brand-locked demand (top 5 brands take 95% of clicks) — this niche doesn't clear our bar today.
Market size 27Growth 56Conversion 94Competition 23Returns 99Price range 80Avg price 83Brand share 12Review moat 25Quality gap 30
**Returns**
**Incredible****0.2%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****11.7%**
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**
**Okay****4.6★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****$114K**
$114K/yr · 54K searches
**Review moat**
**Bad****4,322.71**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****72%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****95%**
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 ~~](https://flapen.com/research/methodology)
## **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**
**32**
**Top-5 brand share**
**95%**
Top 20: 100%
**Top-5 click share**
**72%**
Top 20: 100%
**Open market**
**5%**
- 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.
7K5KSpike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jul, Aug, Sep · busiest ÷ quietest = 3.7×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/ph-down/trend)
## **Top ph down search terms**
- **ph down for plants**37K/yr+37.2%11.3% conv. - **ph down hydroponic**10K/yr+2.2%11.4% conv. - **general hydroponics ph down**6K/yr+43.1%16.1% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/ph-down/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.
0%10%$11K20%$23K30%$34K40%$46K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
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
[1**General Hydroponics HGC722120 Liquid Premium Buffering for pH Stability Quart Orange**General Hydroponics**$15.13**4.8★10,930 rev](https://www.amazon.com/dp/B00CJID1I4) [2**General Hydroponics pH Down Liquid Premium Buffering For pH Stability 1-Gallon**General Hydroponics**$32.96**4.8★10,930 rev](https://www.amazon.com/dp/B000FG0F9U) [3**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**$13.05**4.0★894 rev](https://www.amazon.com/dp/B00R9XGLA4) [4**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**$18.41**4.5★519 rev](https://www.amazon.com/dp/B08SJ6L179) [5**General Hydroponics Ph Control Kit**General Hydroponics**$20.77**4.7★28,701 rev](https://www.amazon.com/dp/B000BNKWZY)
**~~View all top sellers →~~**
### **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**$10.73**38 rev11mo ago](https://www.amazon.com/dp/B0FLT9LCYS) [**TPS NUTRIENTS Ultra Strength pH Down Professional Acid pH Adjuster for Soil and Hydroponics Buffering and Stability Control 8 oz (250mL)**TPS NUTRIENTS**$11.89**45 rev2y ago](https://www.amazon.com/dp/B0D4JG8J4T) [**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**$20.54**469 rev3y ago](https://www.amazon.com/dp/B0BW3G96VV) [**Bloom City pH Down Liquid pH Adjuster 8 oz**Bloom City**$11.94**1,309 rev4y ago](https://www.amazon.com/dp/B08JHGRWD8) [**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**$20.34**722 rev5y ago](https://www.amazon.com/dp/B08XVVVJJK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**TPS NUTRIENTS Ultra Strength pH Down Professional Acid pH Adjuster for Soil and Hydroponics Buffering and Stability Control 8 oz (250mL)**TPS NUTRIENTS**$11.89**4.5★**▲ 120%**](https://www.amazon.com/dp/B0D4JG8J4T) [**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**$10.73**4.7★**▲ 94%**](https://www.amazon.com/dp/B0FLT9LCYS) [**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**$18.41**4.5★**▲ 53%**](https://www.amazon.com/dp/B08SJ6L179) [**Bloom City pH Down Liquid pH Adjuster 8 oz**Bloom City**$11.94**4.6★**▲ 38%**](https://www.amazon.com/dp/B08JHGRWD8) [**Bloom City pH Down Liquid pH Adjuster 32 oz**Bloom City**$18.92**4.6★**▲ 34%**](https://www.amazon.com/dp/B073ZNJSP2)
**~~View all trending →~~**
## **What buyers say about ph down**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Advertised Vs Actual Product**17%
*“As advertised”*
**Ease Of Use**16%
*“Easy to Use”*
**Plant Growth**15%
*“This has helped me grow some very impressive plants”*
**Quality-Overall**14%
*“Overall I'm very happy with the results”*
**Value For Money**14%
*“Worth every penny”*
**Strength**9%
*“the bottles are sturdy”*
**Durability**2%
*“so the bottle lasts a long time”*
**Adjustability/Rotatability/Reclining**2%
*“I can adjust to get it down to 6.5 with no problem”*
**Leak-Proof**1%
*“Arrived no leaks”*
**Size-Overall**1%
*“fit great”*
### **What buyers complain about **
**Functionality-Overall**28%
*“Did not work”*
**Strength**10%
*“its not super strong”*
**Value For Money**7%
*“this one just seemed like a waste of money”*
**Quality-Overall**7%
*“Cheap”*
**Contamination**6%
*“As the solution may cause burns”*
**Plant Growth**5%
*“my plants needed some help as they weren't very happy”*
**Leak-Proof**4%
*“one bottle had leaked”*
**Advertised Vs Actual Product**3%
*“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 Accuracy**3%
*“Even though the PH testing kit is garbage the PH up”*
**Instructions/User Manual/Troubleshooting**3%
*“This comes with ineffective instructions”*
### **Top return reasons **
**Functionality-Overall**34%
**Leak-Proof**18%
**Advertised Vs Actual Product**11%
**Defective Material/Parts**7%
**Value For Money**6%
**Contamination**4%
**Product Condition**3%
**Quality-Overall**2%
**Eco Friendliness**2%
**Measurement/Reading Accuracy**2%
## **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.
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