---
title: "Fountain Algaecide and Clarifier — $736K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/patio-lawn-garden/fountain-algaecide-and-clarifier"
last_updated: "2026-08-10T23:51:38.298Z"
locale: en
meta:
description: "Niche score 69/100 · $736K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 69/100 · $736K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Fountain Algaecide and Clarifier — $736K/yr Amazon US Niche (2026) - Flapen"
---
# **fountain algaecide and clarifier**
**Worth a look**
Shows demand growing +251.6% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 70Growth 99Conversion 99Competition 23Returns 97Price range 88Avg price 95Brand share 30Review moat 25Quality gap 75
**Growth**
**Incredible****+251.6%**
90-day search growth — must beat 0% to launch
**Conversion**
**Incredible****18.0%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Incredible****0.6%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$22.99**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$10.22–$63.54**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Market size**
**Good****$736K**
$736K/yr · 178K searches
**Brand share**
**Okay****87%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Bad****4,891.13**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****72%**
top-5 click share — a locked-up shelf
**Signals**[** Trending**](https://flapen.com/research/niches?market=us&signal=trending "Search growth > 100% (90d)")
According to Flapen's Amazon United States niche tracking, fountain algaecide and clarifier is a $736K/yr Amazon United States market (178K searches/yr). The top 5 brands hold 87% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 69/100.
Data updated Jul 16, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **fountain algaecide and clarifier market data**
- **Units sold / yr**
- **30K–40K**
- avg 1,500–2,000/product
- **Revenue / yr**
- **$690K–$920K**
- units × avg price
- **Conversion rate**
- **18.0%**
- **Avg BSR**
- **#65**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **74 months**
- **Avg seller age**
- **169 days**
## **Competition & brand share**
The top 5 products capture 72% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▼falling
**Sellers**
**63**
**Top-5 brand share**
**87%**
Top 20: 100%
**Top-5 click share**
**72%**
Top 20: 100%
**Open market**
**10%**
- Sanco Industries40% - EasyCare24% - ADIOS!10% - PondBliss8% - MICROBE-LIFT4% - API4% - Open — no brand owns it (3 brands, 10%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +251.6% search growth over the last 90 days.
8K6KHoliday '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 9.7×
[**Open Trend **](https://flapen.com/research/us/patio-lawn-garden/fountain-algaecide-and-clarifier/trend)
## **Top fountain algaecide and clarifier search terms**
- **fountain algaecide and clarifier**38K/yr+470.2%17.7% conv. - **fountain cleaner**27K/yr+193.1%11.7% conv. - **algaecide for fountain**21K/yr+289.8%14.6% conv. - **fountec algaecide and clarifier**8K/yr+239.2%29.7% conv. - **bird safe algaecide for fountains**8K/yr+369.6%9.6% conv. - **water fountain cleaner**9K/yr+149.1%8.1% conv. - **fountain algae control**8K/yr+165.1%14.1% conv. - **fountain cleaner safe for birds**8K/yr+131.9%11.3% conv. - **fountain water treatment**7K/yr+134.4%11.9% conv. - **fountec**7K/yr+176.8%21.0% conv. [**All search terms **](https://flapen.com/research/us/patio-lawn-garden/fountain-algaecide-and-clarifier/search-terms)
## **Top fountain algaecide and clarifier 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.
0%10%$74K20%$147K30%$221K40%$295K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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**$16.52**4.4★4,729 rev](https://www.amazon.com/dp/B07NZX41L7) [2**EasyCare FounTec Algaecide and Clarifier 8 oz. Bottle**EasyCare**$18.73**4.5★12,699 rev](https://www.amazon.com/dp/B000P6B28S) [3**Adios! Fountain Cleaner and Clarifier for Outdoor and Indoor Fountains Safe for Plastic Metal Glass and Stone (16oz)**ADIOS!**$18.79**4.2★703 rev](https://www.amazon.com/dp/B0C42SG3MF) [4**Algaecide for Fountains Clarify and Controls Algae for Large and Small Fountain (8 oz)**PondBliss**$16.91**4.4★410 rev](https://www.amazon.com/dp/B0CF3DCKCM) [5**Bird Bath & Fountain Maintenance - (8 Ounces) - Fast-Acting Enzyme-Based Formula Will Extend The Life of Your Water Feature Aid in Maintaining a Balanced Ecosystem - Safe for All Birds & Animals**Sanco Industries**$10.22**4.3★12,252 rev](https://www.amazon.com/dp/B00HRHEOJC)
**~~View all top sellers →~~**
### **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**$21.95**635 rev1y ago](https://www.amazon.com/dp/B0DJSQ4S5Z) [**Algaecide for Fountains Clarify and Controls Algae for Large and Small Fountain (8 oz)**PondBliss**$16.91**410 rev2y ago](https://www.amazon.com/dp/B0CF3DCKCM) [**Adios! Fountain Cleaner and Clarifier for Outdoor and Indoor Fountains Safe for Plastic Metal Glass and Stone (16oz)**ADIOS!**$18.79**703 rev3y ago](https://www.amazon.com/dp/B0C42SG3MF) [**ADIOS! Fountain Cleaner and Clarifier for Outdoor and Indoor Fountains Safe for Plastic Metal Glass and Stone (8oz)**ADIOS!**$13.91**703 rev3y ago](https://www.amazon.com/dp/B0C42QMHRS) [**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**$12.98**528 rev7y ago](https://www.amazon.com/dp/B09XFFPP3F)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**$10.58**4.2★**▲ 30%**](https://www.amazon.com/dp/B001UR0OOY) [**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**$12.98**4.1★**▲ 29%**](https://www.amazon.com/dp/B09XFFPP3F) [**Bird Bath & Fountain Maintenance - (8 Ounces) - Fast-Acting Enzyme-Based Formula Will Extend The Life of Your Water Feature Aid in Maintaining a Balanced Ecosystem - Safe for All Birds & Animals**Sanco Industries**$10.22**4.3★**▲ 17%**](https://www.amazon.com/dp/B00HRHEOJC) [**Microbe-Lift Bird Bath Clear Two-in-One Water Cleaner 4 Oz Safe for Birds Fish & Frogs Cleans Outdoor Birdbaths & Fountains Natural Formula Prevents Stains & Cloudiness**MICROBE-LIFT**$11.23**4.3★**▲ 14%**](https://www.amazon.com/dp/B001G19A94) [**Adios! Fountain Cleaner and Clarifier for Outdoor and Indoor Fountains Safe for Plastic Metal Glass and Stone (16oz)**ADIOS!**$18.79**4.2★**▲ 11%**](https://www.amazon.com/dp/B0C42SG3MF)
**~~View all trending →~~**
## **What buyers say about fountain algaecide and clarifier**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Cleaning**19%
*“easier to clean”*
**Quality-Overall**18%
*“Fair product”*
**Advertised Vs Actual Product**15%
*“Worked as advertised”*
**Water Resistance**10%
*“This is absolutely perfect for water features”*
**Ease Of Use**7%
*“Easy to use”*
**Value For Money**5%
*“Best Value”*
**Safety Standards**4%
*“Pet safety”*
**Pureness**3%
*“the fountain has remained crystal clear”*
**Plant Growth**2%
*“Works great to control algae in plant saucers”*
**Eco Friendliness**2%
*“safe for the environment”*
### **What buyers complain about **
**Functionality-Overall**40%
*“Not effective”*
**Value For Money**9%
*“Don't go the inexpensive way”*
**Advertised Vs Actual Product**9%
*“The ad is false”*
**Leak-Proof**5%
*“the bottle leaked when I received”*
**Ease Of Cleaning**5%
*“Didn't keep clean”*
**Plant Growth**3%
*“No algae growth”*
**Water Resistance**3%
*“Did not work in my water feature”*
**Contamination**3%
*“Mutating Algae From Hell”*
**Size-Overall**2%
*“need to find a larger size”*
**Strength**2%
*“after reading the directions I realized It was much too strong for my small birdbath”*
### **Top return reasons **
**Advertised Vs Actual Product**40%
**Functionality-Overall**19%
**Size-Overall**8%
**Leak-Proof**8%
**Eco Friendliness**5%
**Value For Money**4%
**Compatibility-Overall**2%
**Water Resistance**2%
**Safety Standards**2%
**Defective Material/Parts**1%
## **Common questions**
- **Is fountain algaecide and clarifier profitable to sell on Amazon United States?**
- The niche generates $736K/yr across 15 tracked products. 90-day search growth is +251.6%. Flapen's verdict: Worth a look (69/100).
- **How competitive is the fountain algaecide and clarifier niche?**
- 9 brands and 63 sellers compete. The top 5 products take 72% of clicks and top 5 brands hold 87% of demand.
- **What do buyers complain about in fountain algaecide and clarifier?**
- Top complaints mined from reviews: Functionality-Overall, Value For Money, Advertised Vs Actual Product. The return rate is 0.6%.
- **When does demand for fountain algaecide and clarifier peak?**
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 9.7× the quietest.
- **What does it cost to enter the fountain algaecide and clarifier niche?**
- Listings span $10.22–$63.54; the average listing price is $22.99 (sweet spot $15–$100). The average incumbent carries 4,891 reviews — the moat a new listing must climb.
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