---
title: "Aquarium Filter — $4.7M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/aquarium-filter"
last_updated: "2026-07-21T16:02:32.315Z"
locale: en
meta:
description: "Niche score 61/100 · $4.7M/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 61/100 · $4.7M/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Aquarium Filter — $4.7M/yr Amazon US Niche (2026) - Flapen"
---
# **aquarium filter**
**Worth a look**
Shows a $4.7M/yr market, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 97Growth 22Conversion 55Competition 74Returns 55Price range 41Avg price 95Brand share 55Review moat 23Quality gap 80
**Market size**
**Incredible****$4.7M**
$4.7M/yr · 3.4M searches
**Avg price**
**Incredible****$30.25**
avg listing price — sweet spot $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Conversion**
**Good****4.6%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****72%**
top-5 brand share — brands hold most of the demand
**Returns**
**Good****2.8%**
return rate — above 6% kills the launch gate
**Price range**
**Okay****$6.37–$211.38**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Bad****8,260.34**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-6.2%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, aquarium filter is a $4.7M/yr Amazon United States market (3.4M searches/yr). The top 5 brands hold 72% of demand. Verdict: Worth a look — 61/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **aquarium filter market data**
- **Units sold / yr**
- **125K–150K**
- avg 2,000–2,500/product
- **Revenue / yr**
- **$3.8M–$4.5M**
- units × avg price
- **Launch success**
- **100%**
- 8 of 8 new (360d)
- **Conversion rate**
- **4.6%**
- **Avg BSR**
- **#34**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **1.3%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **133 days**
## **Competition & brand share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**23 **▼falling
**Sellers**
**82**
**Top-5 brand share**
**72%**
Top 20: 98%
**Top-5 click share**
**41%**
Top 20: 76%
**Open market**
**24%**
- Tetra46% - MarineLand9% - NICREW7% - DaToo5% - QiQiWader4% - PONDFORSE4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -6.2% search growth over the last 90 days.
90K70KPrime Day '25Spike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.2×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/aquarium-filter/trend)
## **Top aquarium filter search terms**
- **aquarium filter**958K/yr-8.7%1.6% conv. - **fish tank filters**620K/yr-2.9%2.5% conv. - **fish tank filter**331K/yr+3.6%2.7% conv. - **fish filter**168K/yr+3.6%3.1% conv. - **10 gallon fish tank filter**134K/yr-20.3%3.8% conv. - **20 gallon fish tank filter**105K/yr-0.3%3.1% conv. - **aquarium filters**117K/yr-12.4%1.1% conv. - **filter for fish tank**104K/yr-1.9%1.7% conv. - **small fish tank filter**93K/yr-7.2%3.7% conv. - **filtro para pecera**84K/yr-0.8%1.1% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/aquarium-filter/search-terms)
## **Top aquarium filter 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%4%$189K8%$378K12%$567K16%$757K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 44 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Tetra Whisper IQ Power Filter 20 Gallons 130 GPH with Stay Clean Technology**Tetra**$21.18**4.2★13,787 rev](https://www.amazon.com/dp/B01NC2P7BM) [2**Tetra Whisper Internal Power Filter Medium Bio-Bag Filter Cartridges 3-Stage Filtration 5-10 gal**Tetra**$15.61**4.3★22,392 rev](https://www.amazon.com/dp/B0002DHYF4) [3**NICREW Slim Aquarium Filter Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums Adjustable Flow 42 GPH 3W**NICREW**$12.34**4.1★2,763 rev](https://www.amazon.com/dp/B0CGN1TV1G) [4**Marineland Bio-Wheel Penguin 350 GPH Power Aquarium Filter Ultra-Quiet Hang-On-Back Fish Tank Filter with Multi-Stage Filtration for Aquariums Up to 60 Gallons**MarineLand**$43.62**4.3★41,200 rev](https://www.amazon.com/dp/B0009IMDQM) [5**Marineland Bio-Wheel Penguin 200 GPH Power Aquarium Filter Ultra-Quiet Hang-On-Back Fish Tank Filter with Multi-Stage Filtration for Aquariums Up to 40 Gallons**MarineLand**$37.91**4.3★41,200 rev](https://www.amazon.com/dp/B0009IODZG)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**QiQiWader Fish Tank Filter 10-40 Gallon Fish Tank Filter 6W 130GPH Equipped with Adjustable Aeration Function.**QiQiWader**$16.18**51 rev5mo ago](https://www.amazon.com/dp/B0GJSJ9LRJ) [**AQUASMITH Hang on Back Aquarium Filter Ultra-Quiet Small Canister Filter Multi-Layered Filtration Bottom Anti-Dry Burn Motor Extra-Large Filter (92GPHfor 5-20 Gallon)**AQUASMITH**$39.59**105 rev6mo ago](https://www.amazon.com/dp/B0GFDCWD7Q) [**SYSENCIAGA Aquarium Filter with UV 450GPH for 40-150 Gallon Tanks Submersible with Timer for Crystal Clear Water in Aquarium Pond Turtle Tank25W**SYSENCIAGA**$29.77**58 rev7mo ago](https://www.amazon.com/dp/B0G584M3WQ) [**QiQiWader Small Aquarium Filter Fish Tank Filter Suitable for 3-10 Gallon Fish Tanks 3W 80GPH with Two Modes Switching Function.**QiQiWader**$16.80**98 rev9mo ago](https://www.amazon.com/dp/B0FVXFYFPQ) [**PONDFORSE Canister Filter External Aquarium Filter Ultra-Quiet Water Circulation Cleaning Machine with Media for Fish Tanks and Aquariums**PONDFORSE**$70.92**1,539 rev10mo ago](https://www.amazon.com/dp/B0FRSBKP5S)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**QiQiWader Fish Tank Filter 10-40 Gallon Fish Tank Filter 6W 130GPH Equipped with Adjustable Aeration Function.**QiQiWader**$16.18**3.8★**▲ 212%**](https://www.amazon.com/dp/B0GJSJ9LRJ) [**AQUASMITH Hang on Back Aquarium Filter Ultra-Quiet Small Canister Filter Multi-Layered Filtration Bottom Anti-Dry Burn Motor Extra-Large Filter (92GPHfor 5-20 Gallon)**AQUASMITH**$39.59**3.9★**▲ 197%**](https://www.amazon.com/dp/B0GFDCWD7Q) [**SYSENCIAGA Aquarium Filter with UV 450GPH for 40-150 Gallon Tanks Submersible with Timer for Crystal Clear Water in Aquarium Pond Turtle Tank25W**SYSENCIAGA**$29.77**4.1★**▲ 181%**](https://www.amazon.com/dp/B0G584M3WQ) [**265 GPH 4-in-1 aquarium filter 20-80 gallon fish tank filters Filtration and Oxygenation filter for fish tank with biochemical cotton ceramic beads Multi-functional turtle tank filter(15 W)**lounginglife**$19.98**4.4★**▲ 151%**](https://www.amazon.com/dp/B0FK26YZDM) [**Large Hang on Back Aquarium Filter 264GPH for 20-75 Gal Fish Tank w/ U-V Light Surface Skimmer 13-Stage Green Killing Deodorization Machine Saltwater Freshwater Crystal Clear Suspension Oxygen**TARARIUM**$61.05**3.8★**▲ 90%**](https://www.amazon.com/dp/B0GC4SWP4M)
**~~View all trending →~~**
## **What buyers say about aquarium filter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**34%
*“Great filtration system”*
**Value For Money**11%
*“Cost effective”*
**Quality-Overall**8%
*“Excellent product”*
**Ease Of Cleaning**8%
*“Easy to clean”*
**Size-Overall**4%
*“Fit as expected”*
**Advertised Vs Actual Product**4%
*“Work as advertised”*
**Spray/Flow**3%
*“The water flows smoothly”*
**Water Flow**3%
*“Water flows clean”*
**Ease Of Use**3%
*“Ease of use”*
**Strength**2%
*“power is strong”*
### **What buyers complain about **
**Durability**23%
*“Comes apart”*
**Filtration**16%
*“Does not filter at all”*
**Quality-Overall**7%
*“Get something higher quality”*
**Functionality-Overall**6%
*“it doesnt work very well”*
**Leak-Proof**5%
*“Leaked”*
**Size-Overall**5%
*“it's small”*
**Water Flow**4%
*“The water flow is extremely weak”*
**Ease Of Cleaning**4%
*“What too complicated to clean”*
**Value For Money**3%
*“I'm out the 25.00 it cost”*
**Instructions/User Manual/Troubleshooting**3%
*“Instructions poorly written”*
### **Top return reasons **
**Size-Overall**46%
**Filtration**25%
**Functionality-Overall**7%
**Defective Material/Parts**4%
**Advertised Vs Actual Product**3%
**Compatibility-Overall**3%
**Value For Money**2%
**Product Condition**2%
**Durability**2%
**Leak-Proof**1%
## **Common questions**
- **Is aquarium filter profitable to sell on Amazon United States?**
- The niche generates $4.7M/yr across 44 tracked products. 8 of 8 products launched in the last 360 days are still selling. 90-day search growth is -6.2%. Flapen's verdict: Worth a look (61/100).
- **How competitive is the aquarium filter niche?**
- 23 brands and 82 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 72% of demand.
- **What do buyers complain about in aquarium filter?**
- Top complaints mined from reviews: Durability, Filtration, Quality-Overall. The return rate is 2.8%.
- **When does demand for aquarium filter peak?**
- Demand is steady year-round — the busiest month runs 1.2× the quietest.
- **What does it cost to enter the aquarium filter niche?**
- Listings span $6.37–$211.38; the average listing price is $30.25 (sweet spot $15–$100). The average incumbent carries 8,260 reviews — the moat a new listing must climb.
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