Alkalinity Decreaser for Hot Tub
FailThe top 5 products take 81% of clicks, so Alkalinity Decreaser for Hot Tub is a Fail.
- Flapen Score
- 46 / 100Ranks 7,082 of 8,839 Patio, Lawn & Garden niches · −10 vs the category median of 5646
- Market size
- $130K/yr47K searches / yr
- 90-day growth
- +2.8%search demand this quarter
- Competition
- 81%top-5 click share · 8 brands · 65 sellers
Flapen Score
Alkalinity Decreaser for Hot Tub against its category
The dotted line is the Patio, Lawn & Garden average. Past it, Alkalinity Decreaser for Hot Tub is stronger. Inside it, weaker.
Market
The Alkalinity Decreaser for Hot Tub market on Amazon at a glance
Shoppers on Amazon United States searched for Alkalinity Decreaser for Hot Tub 47K times last year and spent an estimated $130K. The top 5 brands take 91% of clicks. Demand peaks in May–Nov. Flapen scores it 46 out of 100, a Fail.
01 · Demand
An estimated 14.3% of those searches ended in a purchase.
Shoppers searched for this 47K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 14.3% of those searches ended in a purchase. Searches in the last 90 days moved +2.8% against the 90 days before. Searches, conversion and average price together put the market at an estimated $130K a year.
- Searches, last 12 months
- 47K
- Growth, 90 days vs prior 90
- +2.8%
- Conversion, latest week
- 14.3%
- Market size, estimated
- $130Ka year
- Peak month
- May2.0× the quietest month
- Top search term
- alkalinity decreaser for hot tub26K searches a year
02 · Price
A sale here is worth $19.37.
Listings sell for $19.37 on average, from $8.17 to $39.84. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 250 to 500 of them. At $19.37 that is $5K to $10K a year per listing.
- Average price
- $19.37inside the $15 to $100 sweet spot
- Price range
- $8.17–$39.84
- 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
- $5K–$10K
- Returns
- 0.5%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #70 within Cleaning Tools & Chemicals. It carries 1,629 reviews at 4.61 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 0.0%
- Average rank
- #70in Cleaning Tools & Chemicals
- Average rating
- 4.61 starsAmazon United States average 4.42 stars
- Average reviews
- 1,629per listing
- Listings tracked
- 11
04 · Newcomers
2 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 84 months on average, so the names here are established.
- Launched, last 12 months
- 2
- Successful launches
- 2Amazon's first-year sales bar
- Average brand age
- 84 months
Products
Top Alkalinity Decreaser for Hot Tub 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
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
pH Minus by EcoOne | Natural Water Alkalinity Decreaser for Hot Tub & Pool Application | Chlorine-Free Phosphate-Free Pool Alkaline-level Decreaser | Decreases Alkalaic Levels & Neutralizes pH 2 Lbs
- Price
- $18.83
- Rating
- 4.6/5
- Reviews
- 574
- Age
- 14y ago
Hot Tub Things pH & Alkalinity Down - Alkalinity Decreaser for Hot Tubs & Spas - pH Down for Pools Maintains Clear Water Gentle on Equipment Easy Water Balance Solution for Spas & Pools - 1.25 lb
- Price
- $24.33
- Rating
- 4.5/5
- Reviews
- 707
- Age
- 11y ago
SpaGuard pH Decreaser 22 oz Single Pack
- Price
- $10.18
- Rating
- 4.7/5
- Reviews
- 3,754
- Age
- 15y ago
SpaGuard Total Alkalinity Increaser 2 lb Single Pack
- Price
- $14.89
- Rating
- 4.8/5
- Reviews
- 3,802
- Age
- 14y ago
Trending
estimated 90-day click momentum
Clorox Pool&Spa Spa pH Down Lowers pH in Spa Water Safe for All Spa Types 22 ounce (Pack of 1)
- Price
- $9.08
- Rating
- 4.7/5
- Reviews
- 1,964
- Age
- 11y 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
SpaGuard pH Decreaser 22 oz Single Pack
- Price
- $10.18
- Rating
- 4.7/5
- Reviews
- 3,754
- Age
- 15y ago
SpaGuard Balancer Bundle for Spas & Hot Tubs Single Pack
- Price
- $39.84
- Rating
- 4.6/5
- Reviews
- 1,038
- Age
- 8y ago
AquaDoc Spa pH Decreaser for Hot Tub - 32oz (2-Pack) - Sodium Bisulfate Spa pH Down for Water Balance - Made in USA
- Price
- $35.27
- Rating
- 4.2/5
- Reviews
- 64
- Age
- 8mo ago
Newest
by launch dateAquaDoc Spa pH Decreaser for Hot Tub - 32oz (2-Pack) - Sodium Bisulfate Spa pH Down for Water Balance - Made in USA
- Price
- $35.27
- Rating
- 4.2/5
- Reviews
- 64
- Age
- 8mo 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
AquaDoc Spa pH Decreaser for Hot Tub - 32oz - Sodium Bisulfate Spa pH Down for Water Balance - Made in USA
- Price
- $24.77
- Rating
- 4.5/5
- Reviews
- 440
- Age
- 4y ago
HTH Spa 86132 pH Down Spa & Hot Tub Chemical Lowers pH Prevents Scale 2.5 lbs
- Price
- $8.17
- Rating
- 4.7/5
- Reviews
- 806
- Age
- 4y ago
SpaGuard Balancer Bundle for Spas & Hot Tubs Single Pack
- Price
- $39.84
- Rating
- 4.6/5
- Reviews
- 1,038
- Age
- 8y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 81% of clicks. A locked shelf that new listings rarely crack.
Brands
8 falling
Sellers
65
Est. top-5 brand share
91%
Top 20: 100%
Est. top-5 click share
81%
Top 20: 100%
Open market
5%
- FROG36%
- ecoone19%
- SpaGuard16%
- Hot Tub Things14%
- MAV AquaDoc5%
- CLOROX Pool&Spa4%
- Open — no brand owns it (2 brands, 5%)
Demand
Alkalinity Decreaser for Hot Tub search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: May, Nov · busiest ÷ quietest = 2.0×
Search terms
Top Alkalinity Decreaser for Hot Tub search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- alkalinity decreaser for hot tub26K/yr
- spa alkalinity decreaser7K/yr
- hot tub alkalinity decreaser7K/yr
- alkalinity down for hot tub4K/yr
- alkaline decreaser for hot tub3K/yr
Reviews and returns
What reviews say buyers love and hate about Alkalinity Decreaser for Hot Tub
We read the reviews and the return reasons for every product selling here.
“Did not work”
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.
19 topics
Keep looking
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Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Alkalinity Decreaser for Hot Tub 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