bromine granules for spa hot tub
Worth a lookShows searches that convert (20.1% search→purchase), but brand-locked demand (top 5 brands take 98% of clicks) keeps it on the watch list.
Conversion
Incredible20.1%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Avg price
Incredible$29.37avg listing price — sweet spot $15–$100
Price range
Incredible$18.25–$83.57cheapest to priciest tracked listing — scored on the share inside $15–$100
Growth
Good+33.6%90-day search growth — must beat 0% to launch
Market size
Good$318K$318K/yr · 54K searches
Review moat
Okay2,005.55avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Competition
Bad79%top-5 click share — a locked-up shelf
Brand share
Bad98%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, bromine granules for spa hot tub is a $318K/yr Amazon United States market (54K searches/yr). The top 5 brands hold 98% of demand. Demand peaks in May–Jun. Verdict: Worth a look — 54/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
bromine granules for spa hot tub market data
- Units sold / yr
- 10K–13K
- avg 1,250–1,500/product
- Revenue / yr
- $294K–$367K
- units × avg price
- Conversion rate
- 20.1%
- Avg BSR
- #91
- Page quality
- 0%
- Prime
- 91%
- Sponsored
- 91%
- Out of stock
- 0.0%
- Avg brand age
- 75 months
- Avg seller age
- 155 days
Competition & brand share
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.Brands
6 flat
Sellers
61
Top-5 brand share
98%
Top 20: 100%
Top-5 click share
79%
Top 20: 100%
Open market
0%
- SpaGuard38%
- CLOROX Pool&Spa35%
- LEISURE TIME12%
- MAV AquaDoc7%
- Spa Essentials6%
- SpaChoice2%
Demand & seasonality
Weekly Amazon search volume, last 103 weeks — +33.6% search growth over the last 90 days.Peak months: May, Jun · busiest ÷ quietest = 2.3×
Top bromine granules for spa hot tub search terms
- bromine granules for hot tub18K/yr
- bromine granules28K/yr
- bromine granules for spa hot tub5K/yr
- spa bromine granules3K/yr
Top bromine granules for spa hot tub 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 11 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Clorox Pool&Spa Spa Brominating Granules for Low Odor Sanitization Restores Water Clarity in Hot Tubs and Spas 2 lb (Pack of 1)
CLOROX Pool&Spa$20.664.7★455 rev
SpaGuard Brominating Concentrate for Spas & Hot Tubs 2 lb Single Pack
SpaGuard$30.284.7★2,802 rev
SpaGuard Brominating Concentrate for Spas & Hot Tubs 14 oz Single Pack
SpaGuard$18.774.7★2,802 rev
SpaGuard Brominating Concentrate - 6 lb
SpaGuard$83.574.8★708 rev
Spa Essentials 32362000 Brominating Concentrate Granules for Spas and Hot Tubs 2-Pound White
Spa Essentials$21.424.7★929 rev
Newest
by launch date
AquaDoc Bromine Neutralizer for Pool & Hot Tub - 1 lb - Sodium Thiosulfate Formula to Reduce Bromine Levels - Spa and Pool Chemicals Made in USA
MAV AquaDoc$18.25195 rev
Clorox Pool&Spa Spa Brominating Granules for Low Odor Sanitization Restores Water Clarity in Hot Tubs and Spas 2 lb (Pack of 1)
CLOROX Pool&Spa$20.66455 rev
AquaDoc Bromine Booster for Hot Tub and Spa - 16 oz - Sodium Bromide to Establish Bromide Reserve - Compatible with Bromine Tablets - Made in USA
MAV AquaDoc$28.75464 rev
SpaChoice 1-Pound Premium Bromine Booster Sodium Bromide for Hot Tub Made in USA
SpaChoice$20.73653 rev
Leisure Time 45435 Brominating Granular for Spas and Hot Tubs 1.75 lb.
LEISURE TIME$26.951,696 rev
Trending
90-day click momentumAquaDoc Bromine Neutralizer for Pool & Hot Tub - 1 lb - Sodium Thiosulfate Formula to Reduce Bromine Levels - Spa and Pool Chemicals Made in USA
MAV AquaDoc$18.254.6★
SpaGuard Brominating Concentrate for Spas & Hot Tubs 14 oz Single Pack
SpaGuard$18.774.7★
Leisure Time E5 Spa 56 Chlorinating Granules for Spas and Hot Tubs - Maintains Clean Clear Sanitized Water 5 lbs
LEISURE TIME$33.404.8★
SpaGuard Brominating Concentrate for Spas & Hot Tubs 2 lb Single Pack
SpaGuard$30.284.7★
SpaGuard Brominating Concentrate - 6 lb
SpaGuard$83.574.8★
What buyers say about bromine granules for spa hot tub
What buyers praise and complain about, mined from review topics.What buyers love
“Water quality is great”
“Great low price”
“Works just as advertised”
“Easy to use”
“does not smell as bad as chlorine”
“Great job cleaning and sanitizing”
“Good product for spas”
“Hot Tub Maintenance”
“Works great been using it for 10 years now”
“it keeps the numbers consistent”
What buyers complain about
“Smaller container than I thought”
“set up hard as a rock”
“Contaminated”
“Bad Product”
“Horrible boxing, leaking product”
“I did not get the clean”
“has become quite expensive”
“No chlorine smell”
“This did not work as well as expected”
“The water was harder to keep balanced”
Top return reasons
Common questions
- Is bromine granules for spa hot tub profitable to sell on Amazon United States?
- The niche generates $318K/yr across 11 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +33.6%. Flapen's verdict: Worth a look (54/100).
- How competitive is the bromine granules for spa hot tub niche?
- 6 brands and 61 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 98% of demand.
- What do buyers complain about in bromine granules for spa hot tub?
- Top complaints mined from reviews: Size-Overall, Assembly/Installation, Contamination. The return rate is 0.4%.
- When does demand for bromine granules for spa hot tub peak?
- Demand peaks in May–Jun; the busiest month runs 2.3× the quietest.
- What does it cost to enter the bromine granules for spa hot tub niche?
- Listings span $18.25–$83.57; the average listing price is $29.37 (sweet spot $15–$100). The average incumbent carries 2,006 reviews — the moat a new listing must climb.