algaecide for ponds with fish
Launch itA $1.2M/yr market growing +213.4% this quarter with returns at 0.6% — clears our launch bar.
Growth
Incredible+213.4%90-day search growth — must beat 0% to launch
Returns
Incredible0.6%return rate — above 6% kills the launch gate
Conversion
Incredible14.4%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$31.27avg listing price — sweet spot $15–$100
Price range
Great$10.58–$56.82cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Market size
Great$1.2M$1.2M/yr · 269K searches
Competition
Okay57%top-5 click share — leaders hold, buyers still browse
Brand share
Okay84%top-5 brand share — brands hold most of the demand
Review moat
Bad6,017.23avg incumbent reviews — the moat a new listing must climb
According to Flapen's Amazon United States niche tracking, algaecide for ponds with fish is a $1.2M/yr Amazon United States market (269K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Launch it — 75/100.
Data updated Jul 16, 2026 · scored weekly · How we score niches
Market data
- Units sold / yr
- 40K–50K
- avg 1,500–2,000/product
- Revenue / yr
- $1.3M–$1.6M
- units × avg price
- Launch success
- —
- 0 of 0 new (360d)
- Conversion rate
- 14.4%
- Avg BSR
- #26
- Page quality
- 0%
- Prime
- 91%
- Sponsored
- 77%
- Out of stock
- 0.0%
- Avg brand age
- 103 months
- Avg seller age
- 155 days
Competition
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.Brands
12 falling
Sellers
95
Top-5 brand share
84%
Top 20: 100%
Top-5 click share
57%
Top 20: 98%
Open market
11%
- API53%
- CrystalClear15%
- MICROBE-LIFT7%
- The Pond Guy6%
- Crystal Blue4%
- Aquascape4%
- Open — no brand owns it (6 brands, 11%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +213.4% search growth over the last 90 days.Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 12.0×
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
API POND ALGAEFIX (32 fl oz) Pond Algae Control - Copper Free - Clean Clear Water - Up to 9600 Gallons - Safe for Fish & Plants - Water Gardens Fountains - Natural Active Ingredient - EPA-Registered
API$21.824.3★21,146 rev
API POND ALGAEFIX (1 gallon) Pond Algae Control - Copper Free - Clean Clear Water - Up to 38400 Gallons - Safe for Fish Plants - Water Gardens Fountains - Natural Active Ingredient - EPA-Registered
API$48.174.3★21,146 rev
API POND ALGAEFIX (16 fl oz) Pond Algae Control - Copper Free - Clean Clear Water - Up to 4800 Gallons - Safe for Fish & Plants - Water Gardens Fountains - Natural Active Ingredient - EPA-Registered
API$14.774.3★21,146 rev
CrystalClear Algae D-Solv EPA Registered Pond Algaecide 16 oz
CrystalClear$16.994.1★4,176 rev
MICROBE-LIFT ALGA08 Algaway 5.4 Algae Control Treatment for Ponds and Water Gardens Safe for Koi Fish Goldfish Plants and Decorations 8 Ounces
MICROBE-LIFT$10.584.2★2,030 rev
Newest
by launch date
ActiClear Muck Clear Natural Pond Sludge Treatment 500 Tablets for Ponds Fountains & Bird Baths Beneficial Bacteria & Enzymes Chemical-Free & Safe for Fish Pets & Wildlife
ACTICLEAR$21.95635 rev
LMJP Pond Clarifier Treatment 12 Packets Natural Pond Water Clear for Outdoor Lakes Beneficial Enzymes to Improve Water Clarity & Eliminate Odor Treats Up to 144000 Sq Ft
LMJP$56.82392 rev
CrystalClear AlgaeOff String Algae Killer for Pond & Water Garden 8 lbs
CrystalClear$49.91291 rev
The Pond Guy InstaFix Algae Control Outdoor Water Garden Fountain & Birdbath Algae Solution EPA Registered Liquid Algaecide Control Green Water & String Algae Bird Fish & Pet Safe 16 Ounce
The Pond Guy$12.98528 rev
Fountain Algaecide and Clarifier - 8oz - Kills and Inhibits All Types of Algae Growth Formulated for Small Ponds and Water Features Treats up to 8 000 Gallons
Sanco Industries$16.524,729 rev
Trending
90-day click momentumAPI POND ALGAEFIX (16 fl oz) Pond Algae Control - Copper Free - Clean Clear Water - Up to 4800 Gallons - Safe for Fish & Plants - Water Gardens Fountains - Natural Active Ingredient - EPA-Registered
API$14.774.3★
The Pond Guy InstaFix Algae Control Outdoor Water Garden Fountain & Birdbath Algae Solution EPA Registered Liquid Algaecide Control Green Water & String Algae Bird Fish & Pet Safe 16 Ounce
The Pond Guy$12.984.1★
CrystalClear Algae D-Solv EPA Registered Pond Algaecide 16 oz
CrystalClear$16.994.1★
Tetra 77188 Algae Control Treats 36000 gallons 101.4-Ounce
Tetra$40.164.3★
Aquascape 96022 Algaecide for Pond Waterfall and Water Features 8-Ounce
Aquascape$11.064.3★
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“As described”
“Excellent product”
“Clean and clear”
“keeps water clear”
“easy to use”
“Best Value”
“Fast acting results on green algae priblem”
“It was easy to follow the instructions”
“Great product for small ponds”
“Pet safety”
What buyers complain about
“Not effective”
“Not cheap”
“Ad misleading”
“Stopped working well after a some time”
“you could not see through the water”
“the bottle leaked when I received”
“The directions on the bottle are also rather useless as they don't even explain how to Administer the product”
“Waaaaay smaller than we thought”
“Do not buy this poison”
“Poor quality doesnt work”
Top return reasons
Common questions
- Is algaecide for ponds with fish profitable to sell on Amazon United States?
- The niche generates $1.2M/yr across 22 tracked products. 90-day search growth is +213.4%. Flapen's verdict: Launch it (75/100).
- How competitive is the algaecide for ponds with fish niche?
- 12 brands and 95 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 84% of demand.
- What do buyers complain about in algaecide for ponds with fish?
- Top complaints mined from reviews: Functionality-Overall, Value For Money, Advertised Vs Actual Product. The return rate is 0.6%.
- When does demand for algaecide for ponds with fish peak?
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 12.0× the quietest.
- What does it cost to enter the algaecide for ponds with fish niche?
- Listings span $10.58–$56.82; the average listing price is $31.27 (sweet spot $15–$100). The average incumbent carries 6,017 reviews — the moat a new listing must climb.
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