alkalinity decreaser
Worth a lookShows demand growing +539.5% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+539.5%90-day search growth — must beat 0% to launch
Returns
Incredible0.5%return rate — above 5% kills the launch gate
Avg price
Incredible$33.26avg listing price — sweet spot $15–$100
Price range
Great$9.16–$98.28cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Great9.1%search→purchase rate — share of searches ending in a sale
Brand share
Good70%top-5 brand share — brands hold most of the demand
Review moat
Good1,238.94avg incumbent reviews — the moat a new listing must climb
Competition
Okay61%top-5 click share — leaders hold, buyers still browse
Market size
Okay$188K$188K/yr · 62K searches
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, alkalinity decreaser is a $188K/yr Amazon United States market (62K searches/yr). The top 5 brands hold 70% of demand. Verdict: Worth a look — 65/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
alkalinity decreaser market data
- Units sold / yr
- 5K–6K
- avg 250–500/product
- Revenue / yr
- $166K–$200K
- units × avg price
- Conversion rate
- 9.1%
- Avg BSR
- #72
- Page quality
- 0%
- Prime
- 81%
- Sponsored
- 81%
- Out of stock
- 0.0%
- Avg brand age
- 65 months
- Avg seller age
- 156 days
Competition & brand share
The top 5 products take 61% of clicks — established leaders, but buyers still shop beyond them.Brands
11 falling
Sellers
42
Top-5 brand share
70%
Top 20: 100%
Top-5 click share
61%
Top 20: 100%
Open market
22%
- CLOROX Pool&Spa22%
- Clorox16%
- BioGuard13%
- MAV AquaDoc10%
- FROG8%
- HTH8%
Top alkalinity decreaser search terms
- alkalinity decreaser25K/yr
- alkalinity decreaser for pool16K/yr
- pool alkalinity decreaser8K/yr
- alkalinity down6K/yr
- alkalinity down for pools3K/yr
- lo n slo2K/yr
- bioguard lo n slo2K/yr
Top alkalinity decreaser 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 16 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Clorox Pool&Spa Swimming Pool pH Down Lowers pH Protects Against Eye and Skin Irritation 5LB (Pack of 1)
CLOROX Pool&Spa$9.164.7★7,613 rev
Clorox Pool&Spa Swimming Pool 2-in-1 Perfect Balance Maintains Balanced pH and Alkalinity Levels 8LB (Pack of 1)
Clorox$18.384.7★142 rev
BioGuard Lo N Slo Granular pH Decreaser 8 lb Single Pack
BioGuard$23.014.7★391 rev
FROG DropH pH and Total Alkalinity Decreaser for Hot Tubs and Swim Spas - 3 lb Bottle with TruDose Measuring Cap for Easy Maintenance & Balancing - 1 Pack
FROG$16.074.7★176 rev
HTH Pool Care pH Down Lowers pH Swimming Pool Chemical 5 Lbs
HTH$12.904.7★613 rev
Newest
by launch dateFROG DropH pH and Total Alkalinity Decreaser for Hot Tubs and Swim Spas - 3 lb Bottle with TruDose Measuring Cap for Easy Maintenance & Balancing - 1 Pack
FROG$16.07176 rev
MAV AquaDoc pH Down for Pools - 5lb - Sodium Bisulfate pH Decreaser for Pool & Alkalinity Decreaser - Easy Dissolving Dry Acid Pool Chemicals Made in the USA
MAV AquaDoc$25.59117 rev
MAV AquaDoc pH Down for Pools - 10lb - Sodium Bisulfate pH Decreaser for Pool & Alkalinity Decreaser - Easy Dissolving Dry Acid Pool Chemicals Made in the USA
MAV AquaDoc$32.5569 rev
BioGuard Lo N Slo Granular pH Decreaser 8 lb 2 Pack
BioGuard$39.08143 rev
Acid Blue - Low Fume Muriatic Acid for Swimming Pools & Spas - Lowers pH Reduces Alkalinity - 2 Gallon
EZ POOLS$40.4989 rev
Trending
90-day click momentumHTH Pool Care pH Down Lowers pH Swimming Pool Chemical 5 Lbs
HTH$12.904.7★
Clorox Pool&Spa Swimming Pool 2-in-1 Perfect Balance Maintains Balanced pH and Alkalinity Levels 8LB (Pack of 1)
Clorox$18.384.7★
In The Swim pH Reducer for Swimming Pools Spas and Hot Tubs - Lowers Alkalinity - Prevents Cloudy Water - Balances Water - 90% Sodium Bisulfate - 50 Pounds
In The Swim$98.284.7★
In The Swim pH Reducer for Swimming Pools Spas and Hot Tubs - Lowers Alkalinity - Prevents Cloudy Water - Balances Water - 90% Sodium Bisulfate - 30 Pounds
In The Swim$72.414.7★
MAV AquaDoc pH Down for Pools - 5lb - Sodium Bisulfate pH Decreaser for Pool & Alkalinity Decreaser - Easy Dissolving Dry Acid Pool Chemicals Made in the USA
MAV AquaDoc$25.594.5★
What buyers say about alkalinity decreaser
What buyers praise and complain about, mined from review topics.What buyers love
“Good product for the price”
“reliable it is”
“Easy to use”
“it does the job”
“These work wonders they resolve quickly need to put with a chlorine tab too”
“keeps water clear”
“This worked great for cleaning my pools salt filter”
“it dissolves easily”
“Works great and I really like the low odor”
“Clear pool balance”
What buyers complain about
“Dissolved too quickly”
“Not a good value for your money”
“It doesn't work, period”
“All broke”
“if it had been a more toxic chemical. as many pool chemicals are when not in pool water”
“Cheap made”
“the shape is weird”
“Its harder to store than the bags if you have limited space”
“It was literally clogged with buildup”
“Dont feel like it is strong as other products”
Top return reasons
Common questions
- Is alkalinity decreaser profitable to sell on Amazon United States?
- The niche generates $188K/yr across 16 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +539.5%. Flapen's verdict: Worth a look (65/100).
- How competitive is the alkalinity decreaser niche?
- 11 brands and 42 sellers compete. The top 5 products take 61% of clicks and top 5 brands hold 70% of demand.
- What do buyers complain about in alkalinity decreaser?
- Top complaints mined from reviews: Solubility, Value For Money, Functionality-Overall. The return rate is 0.5%.
- What does it cost to enter the alkalinity decreaser niche?
- Listings span $9.16–$98.28; the average listing price is $33.26 (sweet spot $15–$100). The average incumbent carries 1,239 reviews — the moat a new listing must climb.