pool shock 73 calcium hypochlorite
Worth a lookShows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Returns
Incredible0.1%return rate — above 5% kills the launch gate
Growth
Incredible+130.9%90-day search growth — must beat 0% to launch
Avg price
Great$94.31avg listing price — sweet spot $15–$100
Competition
Good41%top-5 click share — leaders hold, buyers still browse
Brand share
Good66%top-5 brand share — brands hold most of the demand
Conversion
Good5.4%search→purchase rate — share of searches ending in a sale
Price range
Okay$26.01–$269.29cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Okay4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad4,070.1avg incumbent reviews — the moat a new listing must climb
Market size
Bad$81K$81K/yr · 16K searches
According to Flapen's Amazon United States niche tracking, pool shock 73 calcium hypochlorite is a $81K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 66% of demand. Verdict: Worth a look — 60/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
pool shock 73 calcium hypochlorite market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- $94K–$118K
- units × avg price
- Conversion rate
- 5.4%
- Avg BSR
- #105
- Page quality
- 0%
- Prime
- 48%
- Sponsored
- 93%
- Out of stock
- 9.9%
- Avg brand age
- 84 months
- Avg seller age
- 142 days
Competition & brand share
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.Brands
16 rising
Sellers
102
Top-5 brand share
66%
Top 20: 100%
Top-5 click share
41%
Top 20: 91%
Open market
34%
- CLOROX Pool&Spa12%
- EZ POOLS12%
- HTH12%
- Rx Clear10%
- Doheny's10%
- In The Swim10%
Demand
Weekly Amazon search volume, last 12 weeks — +130.9% search growth over the last 90 days.Top pool shock 73 calcium hypochlorite search terms
- pool shock 24 pack9K/yr
- pool shock 73 calcium hypochlorite4K/yr
- pool shock 73% calcium hypochlorite3K/yr
Top pool shock 73 calcium hypochlorite 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 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Super Shockwave Pool Shock 73% Cal-Hypo Granular Sanitizer for Crystal Clear Water Defends Against Bacteria Algae and Microorganisms - 25 Pounds
EZ POOLS$138.104.6★306 rev
Dohenys Super Pool Shock | Pro-Grade Chlorine Shock Quick-Dissolving Fast-Acting 68% Cal-Hypo Granular Pool Shock | 24 x 1lb Bags Proudly Made in the USA
Doheny's$102.954.7★3,171 rev
Pool Essentials Shock Treatment Clears Cloudy Water Fast-Dissolving 24-Pack Granular
Pool Essentials$92.634.6★83 rev
Clorox Pool&Spa Shock XTRABLUE Plus Kills Bacteria & Algae in Swimming Pools Swim-Ready in 15 Minutes (12-Pack) Granular
CLOROX Pool&Spa$58.624.8★4,776 rev
HTH 52037R Pool Care Shock Advanced Swimming Pool Chemical - Cal Hypo Formula Prevents Bacteria & Algae Restores Crystal Clear Water - Shock Treatment 1lb (12 Pack)
HTH$48.094.7★14,239 rev
Newest
by launch date
HTH 52065 Pool Care Shock Advanced Swimming Pool Chemical - Cal Hypo Formula Prevents Bacteria & Algae Restores Crystal Clear Water - Shock Treatment 1lb Packs (24 Packs)
HTH$86.4514,239 rev
Cal Hypo Granule Pool Shock Fast-Dissolving Chlorine Shock Treatment for Swimming Pools Powerful Pool Water Clarifier & Sanitizer for Inground & Above Ground Pools 1 lb Bag (24 Pack)
Pyrock Chemical$80.1560 rev
Pool Essentials Shock Treatment Clears Cloudy Water Fast-Dissolving 24-Pack Granular
Pool Essentials$92.6383 rev
Leslies Leslies Power Powder Plus 73% Cal-Hypo Granular Pool Shock Sanitizer for Crystal Clear Water Fast-Dissolving Eliminates Algae & Bacteria 6 x 1 Pound Bags 25273
Leslie's$49.2177 rev
Pro-Grade Chlorine Pool Shock 68% Cal-Hypo Granular Sanitizer Prevents Bacteria & Algae Restores Crystal Clear Water - Shock Treatment Swimming Pool Chemical - 24 X 1lb
POOLACC$84.71165 rev
Trending
90-day click momentumHTH 52065 Pool Care Shock Advanced Swimming Pool Chemical - Cal Hypo Formula Prevents Bacteria & Algae Restores Crystal Clear Water - Shock Treatment 1lb Packs (24 Packs)
HTH$86.454.7★
HTH 52046 Pool Care Shock Advanced Swimming Pool Chemical - Cal Hypo Formula Prevents Bacteria & Algae Restores Crystal Clear Water - Shock Treatment 1lb (15 Pack) + 15 HTH Pool Care Test Strips
HTH$59.424.7★
Cal Hypo Granule Pool Shock Fast-Dissolving Chlorine Shock Treatment for Swimming Pools Powerful Pool Water Clarifier & Sanitizer for Inground & Above Ground Pools 1 lb Bag (24 Pack)
Pyrock Chemical$80.154.4★
Clorox Pool&Spa Shock Clear for Crystal Clear Swimming Pool Water Swim-ready in 15 minutes Suitable for vinyl pools (12-Pack)
CLOROX Pool&Spa$50.814.7★
In The Swim Pool Shock 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water Defends Against Bacteria Algae and Microorganisms - 12 X 1 Pound
In The Swim$51.234.6★
What buyers say about pool shock 73 calcium hypochlorite
What buyers praise and complain about, mined from review topics.What buyers love
“Great Value”
“Reliable products”
“As advertised”
“Easy to use”
“Always keeps my pool clear and clean”
“keeps water clear”
“It seems durable”
“Crystal Clear Pool”
“Clear pool”
“Great Fit”
What buyers complain about
“It's a little expensive”
“Poor quality control”
“still not very effective”
“They were leaking product as I was putting it in the pool”
“Opened the sealed container and had some type of moisture because it was clumpy and still wet”
“it had a very strong smell”
“causes filter build up”
“Unfortunately a lot of dirty water got in the pool when taking the cover off. gross”
“not the pure white that it should be”
“It is a very bad user experience”
Top return reasons
Common questions
- Is pool shock 73 calcium hypochlorite profitable to sell on Amazon United States?
- The niche generates $81K/yr across 29 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is +130.9%. Flapen's verdict: Worth a look (60/100).
- How competitive is the pool shock 73 calcium hypochlorite niche?
- 16 brands and 102 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 66% of demand.
- What do buyers complain about in pool shock 73 calcium hypochlorite?
- Top complaints mined from reviews: Value For Money, Quality-Overall, Functionality-Overall. The return rate is 0.1%.
- What does it cost to enter the pool shock 73 calcium hypochlorite niche?
- Listings span $26.01–$269.29; the average listing price is $94.31 (sweet spot $15–$100). The average incumbent carries 4,070 reviews — the moat a new listing must climb.