Is sodium bisulfate profitable to sell on Amazon United States?

The niche generates $2.1M/yr across 6 tracked products. 90-day search growth is +399.5%. Flapen's verdict: Launch it (63/100).

How competitive is the sodium bisulfate niche?

5 brands and 22 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in sodium bisulfate?

Top complaints mined from reviews: Value For Money, Functionality-Overall, Storage Capacity. The return rate is 0.4%.

When does demand for sodium bisulfate peak?

Demand peaks in May–Jun–Jul–Aug; the busiest month runs 12.9× the quietest.

What does it cost to enter the sodium bisulfate niche?

Listings span $9.16–$98.28; the average listing price is $41.60 (sweet spot $15–$100). The average incumbent carries 1,670 reviews — the moat a new listing must climb.

sodium bisulfate

Launch it

A $2.1M/yr market growing +399.5% this quarter with returns at 0.4% — clears our launch bar.

Growth

Incredible+399.5%

90-day search growth — must beat 0% to launch

Conversion

Incredible19.6%

search→purchase rate — share of searches ending in a sale

Returns

Incredible0.4%

return rate — above 5% kills the launch gate

Market size

Incredible$2.1M

$2.1M/yr · 262K searches

Avg price

Incredible$41.60

avg listing price — sweet spot $15–$100

Price range

Great$9.16–$98.28

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Okay1,669.5

avg incumbent reviews — the moat a new listing must climb

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Competition

Bad97%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals Trending

According to Flapen's Amazon United States niche tracking, sodium bisulfate is a $2.1M/yr Amazon United States market (262K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Launch it — 63/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

sodium bisulfate market data

Units sold / yr: 60K–80K; avg 12,500–15,000/product
Revenue / yr: $2.5M–$3.3M; units × avg price
Conversion rate: 19.6%
Avg BSR: #37
Page quality: 0%
Prime: 83%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 91 months
Avg seller age: 151 days

Competition & brand share

The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.

Brands

5 falling

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

97%

Top 20: 100%

Open market

CLOROX Pool&Spa57%
HTH22%
In The Swim15%
Leslie's3%
MAV AquaDoc3%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +399.5% search growth over the last 90 days.

Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 12.9×

Open Trend

Top sodium bisulfate search terms

ph down for pools64K/yr +730.4%20.9% conv.
ph decreaser for pool25K/yr +623.5%18.6% conv.
sodium bisulfate31K/yr +151.3%9.2% conv.
pool ph down18K/yr +375.5%20.9% conv.
ph reducer for pool14K/yr +297.5%19.2% conv.
dry acid for swimming pools13K/yr +372.5%7.7% conv.
sodium bisulfate for pool11K/yr +512.0%13.7% conv.
ph decreaser15K/yr +143.8%10.8% conv.
ph minus for pools10K/yr +774.2%14.1% conv.
clorox ph down11K/yr +224.7%19.2% conv.

All search terms

Top sodium bisulfate 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 6 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

HTH Pool Care pH Down Lowers pH Swimming Pool Chemical 5 Lbs

HTH$12.904.7★613 rev

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★781 rev

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★781 rev

Leslies Dry Acid pH Down for Swimming Pools Spas and Hot Tubs - Reduces pH and Total Alkalinity Levels - Safe On All Surfaces - 10 Pounds

Leslie's$31.254.6★112 rev

Newest

by launch date

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

1y ago

Leslies Dry Acid pH Down for Swimming Pools Spas and Hot Tubs - Reduces pH and Total Alkalinity Levels - Safe On All Surfaces - 10 Pounds

Leslie's$31.25112 rev

2y ago

HTH Pool Care pH Down Lowers pH Swimming Pool Chemical 5 Lbs

HTH$12.90613 rev

4y ago

Clorox Pool&Spa Swimming Pool pH Down Lowers pH Protects Against Eye and Skin Irritation 5LB (Pack of 1)

CLOROX Pool&Spa$9.167,613 rev

6y 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

In The Swim$98.28781 rev

8y ago

What buyers say about sodium bisulfate

What buyers praise and complain about, mined from review topics.

What buyers love

Value For Money34%

“it was about as cheap as I could find at the time”

Advertised Vs Actual Product19%

“it does the job”

Ease Of Use16%

“So easy to use”

Quality-Overall12%

“Overall, no issues”

Filtration4%

“Pool water PH reducer”

Water Resistance4%

“Really helped with the pool water”

Instructions/User Manual/Troubleshooting4%

“The instructions were easy to follow”

Pureness2%

“helps keep the water clear”

Durability1%

“so the container lasts longer than expected”

Strength1%

“the packaging was sturdy”

What buyers complain about

Value For Money40%

“Not as good for the $as Muric Acid”

Functionality-Overall40%

“It doesn't work, period”

Storage Capacity10%

“Its harder to store than the bags if you have limited space”

Top return reasons

Leak-Proof27%

Functionality-Overall22%

Value For Money20%

Advertised Vs Actual Product13%

Size-Overall5%

Contamination4%

Stitch/Finish/Polish1%

Measurement/Reading Accuracy1%

Defective Material/Parts1%

Assembly/Installation1%

Common questions

Is sodium bisulfate profitable to sell on Amazon United States?: The niche generates $2.1M/yr across 6 tracked products. 90-day search growth is +399.5%. Flapen's verdict: Launch it (63/100).
How competitive is the sodium bisulfate niche?: 5 brands and 22 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in sodium bisulfate?: Top complaints mined from reviews: Value For Money, Functionality-Overall, Storage Capacity. The return rate is 0.4%.
When does demand for sodium bisulfate peak?: Demand peaks in May–Jun–Jul–Aug; the busiest month runs 12.9× the quietest.
What does it cost to enter the sodium bisulfate niche?: Listings span $9.16–$98.28; the average listing price is $41.60 (sweet spot $15–$100). The average incumbent carries 1,670 reviews — the moat a new listing must climb.