Alkalinity Decreaser
PassAlkalinity Decreaser scores 65 out of 100, a Pass. Shoppers spend an estimated $188K a year here, search demand grew +539.5% this quarter, and an estimated 0.5% of orders come back.
- Flapen Score
- 65 / 100Top 16% of 8,839 Patio, Lawn & Garden niches · +9 vs the category median of 5665
- Market size
- $188K/yr62K searches / yr
- 90-day growth
- +539.5%search demand this quarter
- Competition
- 61%top-5 click share · 11 brands · 42 sellers
Flapen Score
Alkalinity Decreaser against its category
The dotted line is the Patio, Lawn & Garden average. Past it, Alkalinity Decreaser is stronger. Inside it, weaker.
Market
The Alkalinity Decreaser market on Amazon at a glance
Shoppers on Amazon United States searched for Alkalinity Decreaser 62K times last year and spent an estimated $188K. The top 5 brands take 70% of clicks. Flapen scores it 65 out of 100, a Pass.
01 · Demand
An estimated 9.1% of those searches ended in a purchase.
Shoppers searched for this 62K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 9.1% of those searches ended in a purchase. Searches in the last 90 days moved +539.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $188K a year.
- Searches, last 12 months
- 62K
- Growth, 90 days vs prior 90
- +539.5%
- Conversion, latest week
- 9.1%
- Market size, estimated
- $188Ka year
- Top search term
- alkalinity decreaser25K searches a year
02 · Price
A sale here is worth $33.26.
Listings sell for $33.26 on average, from $9.16 to $98.28. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 250 to 500 of them. At $33.26 that is $8K to $17K a year per listing.
- Average price
- $33.26inside the $15 to $100 sweet spot
- Price range
- $9.16–$98.28
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 5K–6K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $8K–$17K
- Returns
- 0.5%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
81% of listings pay for placement with sponsored ads. 81% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #72 within Cleaning Tools & Chemicals. It carries 1,239 reviews at 4.64 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 81%
- Prime listings
- 81%
- Out of stock, average day
- 0.0%
- Average rank
- #72in Cleaning Tools & Chemicals
- Average rating
- 4.64 starsAmazon United States average 4.42 stars
- Average reviews
- 1,239per listing
- Listings tracked
- 16
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 65 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 65 months
Products
Top Alkalinity Decreaser products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 24, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Clorox Pool&Spa Swimming Pool pH Down Lowers pH Protects Against Eye and Skin Irritation 5LB (Pack of 1)
- Price
- $9.16
- Rating
- 4.7/5
- Reviews
- 7,613
- Age
- 6y ago

Clorox Pool&Spa Swimming Pool 2-in-1 Perfect Balance Maintains Balanced pH and Alkalinity Levels 8LB (Pack of 1)
- Price
- $18.38
- Rating
- 4.7/5
- Reviews
- 142
- Age
- 3y ago

BioGuard Lo N Slo Granular pH Decreaser 8 lb Single Pack
- Price
- $23.01
- Rating
- 4.7/5
- Reviews
- 391
- Age
- 6y ago

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
- Price
- $16.07
- Rating
- 4.7/5
- Reviews
- 176
- Age
- 11mo ago

HTH Pool Care pH Down Lowers pH Swimming Pool Chemical 5 Lbs
- Price
- $12.90
- Rating
- 4.7/5
- Reviews
- 613
- Age
- 4y ago
Trending
estimated 90-day click momentum
HTH Pool Care pH Down Lowers pH Swimming Pool Chemical 5 Lbs
- Price
- $12.90
- Rating
- 4.7/5
- Reviews
- 613
- Age
- 4y ago

Clorox Pool&Spa Swimming Pool 2-in-1 Perfect Balance Maintains Balanced pH and Alkalinity Levels 8LB (Pack of 1)
- Price
- $18.38
- Rating
- 4.7/5
- Reviews
- 142
- Age
- 3y ago

In The Swim pH Reducer for Swimming Pools Spas and Hot Tubs - Lowers Alkalinity - Prevents Cloudy Water - Balances Water - 90% Sodium Bisulfate - 50 Pounds
- Price
- $98.28
- Rating
- 4.7/5
- Reviews
- 781
- Age
- 8y ago

In The Swim pH Reducer for Swimming Pools Spas and Hot Tubs - Lowers Alkalinity - Prevents Cloudy Water - Balances Water - 90% Sodium Bisulfate - 30 Pounds
- Price
- $72.41
- Rating
- 4.7/5
- Reviews
- 781
- Age
- 15y ago

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
- Price
- $25.59
- Rating
- 4.5/5
- Reviews
- 117
- Age
- 1y ago
Newest
by launch date
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
- Price
- $16.07
- Rating
- 4.7/5
- Reviews
- 176
- Age
- 11mo ago

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
- Price
- $25.59
- Rating
- 4.5/5
- Reviews
- 117
- Age
- 1y ago

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
- Price
- $32.55
- Rating
- 4.8/5
- Reviews
- 69
- Age
- 1y ago

BioGuard Lo N Slo Granular pH Decreaser 8 lb 2 Pack
- Price
- $39.08
- Rating
- 4.6/5
- Reviews
- 143
- Age
- 1y ago

Acid Blue - Low Fume Muriatic Acid for Swimming Pools & Spas - Lowers pH Reduces Alkalinity - 2 Gallon
- Price
- $40.49
- Rating
- 4.4/5
- Reviews
- 89
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 61% of clicks. Leaders hold, but buyers still shop past them.
Brands
11 falling
Sellers
42
Est. top-5 brand share
70%
Top 20: 100%
Est. top-5 click share
61%
Top 20: 100%
Open market
22%
- CLOROX Pool&Spa22%
- Clorox16%
- BioGuard13%
- MAV AquaDoc10%
- FROG8%
- HTH8%
Search terms
Top Alkalinity Decreaser search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 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
Reviews and returns
What reviews say buyers love and hate about Alkalinity Decreaser
We read the reviews and the return reasons for every product selling here.
“Dissolved too quickly”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
22 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Alkalinity Decreaser questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









