ph down hot tub
Worth a lookShows searches that convert (31.7% search→purchase), but a concentrated shelf (top 5 take 77% of clicks) keeps it on the watch list.
Conversion
Incredible31.7%search→purchase rate — share of searches ending in a sale
Returns
Incredible0.4%return rate — above 5% kills the launch gate
Avg price
Great$16.86avg listing price — sweet spot $15–$100
Price range
Great$8.17–$35.27cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$280K$280K/yr · 52K searches
Growth
Okay+18.5%90-day search growth — must beat 0% to launch
Review moat
Okay1,892.73avg incumbent reviews — the moat a new listing must climb
Brand share
Okay86%top-5 brand share — brands hold most of the demand
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Competition
Bad77%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, ph down hot tub is a $280K/yr Amazon United States market (52K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Apr–May–Jun. Verdict: Worth a look — 53/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
ph down hot tub market data
- Units sold / yr
- 15K–20K
- avg 1,250–1,500/product
- Revenue / yr
- $253K–$337K
- units × avg price
- Conversion rate
- 31.7%
- Avg BSR
- #77
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 91%
- Out of stock
- 0.0%
- Avg brand age
- 96 months
- Avg seller age
- 161 days
Competition & brand share
The top 5 products capture 77% of clicks — a locked-up shelf that new listings rarely crack.Brands
9 rising
Sellers
80
Top-5 brand share
86%
Top 20: 100%
Top-5 click share
77%
Top 20: 100%
Open market
7%
- CLOROX Pool&Spa45%
- hth Spa13%
- FROG10%
- SpaGuard9%
- MAV AquaDoc8%
- LEISURE TIME7%
- Open — no brand owns it (3 brands, 7%)
Demand & seasonality
Weekly Amazon search volume, last 103 weeks — +18.5% search growth over the last 90 days.Peak months: Apr, May, Jun · busiest ÷ quietest = 5.5×
Top ph down hot tub search terms
- ph down hot tub36K/yr
- spa ph down7K/yr
- ph down spa3K/yr
- hot tub ph down4K/yr
- spa ph down for hot tub3K/yr
Top ph down 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 pH Down Lowers pH in Spa Water Safe for All Spa Types 22 ounce (Pack of 1)
CLOROX Pool&Spa$9.084.7★1,964 rev
HTH Spa 86132 pH Down Spa & Hot Tub Chemical Lowers pH Prevents Scale 2.5 lbs
hth Spa$8.174.7★806 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
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
SpaGuard pH Decreaser 22 oz Single Pack
SpaGuard$10.184.7★3,754 rev
Newest
by launch date
Superpool pH Down for Pools & Hot Tubs Pool pH Reducer Spa pH Decreaser for Swimming Pools & Spas Fast Acting Granular pH Lower for Clear & Balanced Water
Superpool$21.1739 rev
AquaDoc Spa pH Decreaser for Hot Tub - 32oz (2-Pack) - Sodium Bisulfate Spa pH Down for Water Balance - Made in USA
MAV AquaDoc$35.2764 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$16.07176 rev
AquaDoc Spa pH Decreaser for Hot Tub - 32oz - Sodium Bisulfate Spa pH Down for Water Balance - Made in USA
MAV AquaDoc$24.77440 rev
HTH Spa 86132 pH Down Spa & Hot Tub Chemical Lowers pH Prevents Scale 2.5 lbs
hth Spa$8.17806 rev
Trending
90-day click momentumSuperpool pH Down for Pools & Hot Tubs Pool pH Reducer Spa pH Decreaser for Swimming Pools & Spas Fast Acting Granular pH Lower for Clear & Balanced Water
Superpool$21.174.4★
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★
SpaGuard pH Decreaser 22 oz Single Pack
SpaGuard$10.184.7★
Clorox Pool&Spa Spa pH Down Lowers pH in Spa Water Safe for All Spa Types 22 ounce (Pack of 1)
CLOROX Pool&Spa$9.084.7★
AquaDoc Spa pH Decreaser for Hot Tub - 32oz (2-Pack) - Sodium Bisulfate Spa pH Down for Water Balance - Made in USA
MAV AquaDoc$35.274.2★
What buyers say about ph down hot tub
What buyers praise and complain about, mined from review topics.What buyers love
“Good value”
“Easy to use”
“maintains consistent quality”
“Works as advertised”
“Clear labeling and instructions”
“more reliable sanitizer efficacy”
“doesnt leave any strong chemical smell”
“Tested with a ph meter shows it is effective”
“reliable”
“And I didn't need to use that much to do it”
What buyers complain about
“Did not work”
“A little expensive”
“the shape is weird”
“Very small bottles”
“Our water is extremely hard”
“Heavy liquid containers can sometimes arrive damaged or leaking”
Top return reasons
Common questions
- Is ph down hot tub profitable to sell on Amazon United States?
- The niche generates $280K/yr across 11 tracked products. 3 of 3 products launched in the last 360 days are still selling. 90-day search growth is +18.5%. Flapen's verdict: Worth a look (53/100).
- How competitive is the ph down hot tub niche?
- 9 brands and 80 sellers compete. The top 5 products take 77% of clicks and top 5 brands hold 86% of demand.
- What do buyers complain about in ph down hot tub?
- Top complaints mined from reviews: Functionality-Overall, Value For Money, Shape/Style. The return rate is 0.4%.
- When does demand for ph down hot tub peak?
- Demand peaks in Apr–May–Jun; the busiest month runs 5.5× the quietest.
- What does it cost to enter the ph down hot tub niche?
- Listings span $8.17–$35.27; the average listing price is $16.86 (sweet spot $15–$100). The average incumbent carries 1,893 reviews — the moat a new listing must climb.