5 Gallon Fish Tank Filter
FailDemand is soft, at -10.5% this quarter, so 5 Gallon Fish Tank Filter is a Fail.
- Flapen Score
- 46 / 100Ranks 2,652 of 3,978 Pet Supplies niches · −5 vs the category median of 5146
- Market size
- $102K/yr217K searches / yr
- 90-day growth
- -10.5%search demand this quarter
- Competition
- 52%top-5 click share · 20 brands · 35 sellers
Flapen Score
5 Gallon Fish Tank Filter against its category
The dotted line is the Pet Supplies average. Past it, 5 Gallon Fish Tank Filter is stronger. Inside it, weaker.
Market
The 5 Gallon Fish Tank Filter market on Amazon at a glance
Shoppers on Amazon United States searched for 5 Gallon Fish Tank Filter 217K times last year and spent an estimated $102K. The top 5 brands take 70% of clicks. Demand peaks in Jul–Aug. Flapen scores it 46 out of 100, a Fail.
01 · Demand
An estimated 4.3% of those searches ended in a purchase.
Shoppers searched for this 217K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 4.3% of those searches ended in a purchase. Searches in the last 90 days moved -10.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $102K a year.
- Searches, last 12 months
- 217K
- Growth, 90 days vs prior 90
- -10.5%
- Conversion, latest week
- 4.3%
- Market size, estimated
- $102Ka year
- Peak month
- August2.0× the quietest month
- Top search term
- 3 gallon fish tank filter28K searches a year
02 · Price
A sale here is worth $10.88.
Listings sell for $10.88 on average, from $5.91 to $22.36. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 250 to 500 of them. At $10.88 that is $3K to $5K a year per listing.
- Average price
- $10.88under the $15 to $100 sweet spot
- Price range
- $5.91–$22.36
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 10K–13K
- Units per listing a year
- 250–500
- Revenue per listing a year
- $3K–$5K
- Returns
- 3.2%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
75% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 4.1% of listings are out of stock. The average listing ranks #90 within Fish & Aquatic Pets. It carries 2,712 reviews at 4.08 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 75%
- Prime listings
- 100%
- Out of stock, average day
- 4.1%
- Average rank
- #90in Fish & Aquatic Pets
- Average rating
- 4.08 starsAmazon United States average 4.42 stars
- Average reviews
- 2,712per listing
- Listings tracked
- 32
04 · Newcomers
1 of last year's 8 launches cleared the first-year sales bar.
8 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 40 months on average, so the names here are settling in.
- Launched, last 12 months
- 8
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 40 months
Products
Top 5 Gallon Fish Tank Filter products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Tetra Whisper 4i Internal Power Filter Filtration for Aquariums Between 1 and 4 Gallons
- Price
- $12.35
- Rating
- 4.3/5
- Reviews
- 22,392
- Age
- 7y ago

NICREW Slim Aquarium Filter Quiet Fish Tank HOB Filters for up to 5 Gallon Aquariums Adjustable Flow 42 GPH 3W
- Price
- $12.34
- Rating
- 4.1/5
- Reviews
- 2,763
- Age
- 2y ago

Tetra Whisper Internal Power Filter Medium Bio-Bag Filter Cartridges 3-Stage Filtration 5-10 gal
- Price
- $15.61
- Rating
- 4.3/5
- Reviews
- 22,392
- Age
- 22y ago

DaToo Aquarium Power Filter In-Tank Ultra Silent Small Fish Tank Filter 3W For Aquarium 1 to 10 Gallon Tank 1 Yr Warranty
- Price
- $7.75
- Rating
- 4.0/5
- Reviews
- 3,198
- Age
- 8y ago

Novique HOB Slim Aquarium Filter for Up to 5 Gallon Tank Ultra-Quiet Fish Tank Power Filter Flow Adjustable Suitable for Saltwater and Freshwater 42 GPH 3W
- Price
- $8.96
- Rating
- 3.9/5
- Reviews
- 119
- Age
- 11mo ago
Trending
estimated 90-day click momentum
Carefree Fish Aquarium Small Sponge Bubble Filter with Fish Poops Collector Quiet for 3~8Gal Fish Tank for Saltwater and Freshwater(Not Include Air Pump)
- Price
- $9.82
- Rating
- 4.0/5
- Reviews
- 30
- Age
- 3mo ago

12-Pack EF-S Replacement Filter Cartridges for BF5 BettaFlo Aquarium Professional Triple Filtration to Keep Water Crystal Clear & Fish Healthy High-Density Activated Carbon Refills for Fish Tank
- Price
- $7.24
- Rating
- 4.1/5
- Reviews
- 75
- Age
- 5mo ago

Novique HOB Slim Aquarium Filter for Up to 5 Gallon Tank Ultra-Quiet Fish Tank Power Filter Flow Adjustable Suitable for Saltwater and Freshwater 42 GPH 3W
- Price
- $8.96
- Rating
- 3.9/5
- Reviews
- 119
- Age
- 11mo ago

QiQiWader Small Aquarium Filter Fish Tank Filter Suitable for 3-10 Gallon Fish Tanks 3W 80GPH with Two Modes Switching Function.
- Price
- $16.80
- Rating
- 4.1/5
- Reviews
- 98
- Age
- 9mo ago

Tetra Whisper Internal Power Filter Medium Bio-Bag Filter Cartridges 3-Stage Filtration 5-10 gal
- Price
- $15.61
- Rating
- 4.3/5
- Reviews
- 22,392
- Age
- 22y ago
Newest
by launch date
Carefree Fish Aquarium Small Sponge Bubble Filter with Fish Poops Collector Quiet for 3~8Gal Fish Tank for Saltwater and Freshwater(Not Include Air Pump)
- Price
- $9.82
- Rating
- 4.0/5
- Reviews
- 30
- Age
- 3mo ago

12-Pack EF-S Replacement Filter Cartridges for BF5 BettaFlo Aquarium Professional Triple Filtration to Keep Water Crystal Clear & Fish Healthy High-Density Activated Carbon Refills for Fish Tank
- Price
- $7.24
- Rating
- 4.1/5
- Reviews
- 75
- Age
- 5mo ago

QiQiWader Small Aquarium Filter Fish Tank Filter Suitable for 3-10 Gallon Fish Tanks 3W 80GPH with Two Modes Switching Function.
- Price
- $16.80
- Rating
- 4.1/5
- Reviews
- 98
- Age
- 9mo ago

Novique HOB Slim Aquarium Filter for Up to 5 Gallon Tank Ultra-Quiet Fish Tank Power Filter Flow Adjustable Suitable for Saltwater and Freshwater 42 GPH 3W
- Price
- $8.96
- Rating
- 3.9/5
- Reviews
- 119
- Age
- 11mo ago

Petta Quiet Aquarium Filter for Betta Slim HOB Fish Tank Filter for 3-10 Gal Planted Aquariums & Aquascaping with 1 Pre-Filter Sponge Adjustable Flow250L/H
- Price
- $10.50
- Rating
- 3.5/5
- Reviews
- 76
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 52% of clicks. Leaders hold, but buyers still shop past them.
Brands
20 falling
Sellers
35
Est. top-5 brand share
70%
Top 20: 100%
Est. top-5 click share
52%
Top 20: 87%
Open market
23%
- Tetra23%
- NICREW22%
- DaToo9%
- Aqueon8%
- Pawfly8%
- Novique7%
Demand
5 Gallon Fish Tank Filter search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jul, Aug · busiest ÷ quietest = 2.0×
Search terms
Top 5 Gallon Fish Tank Filter search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- 3 gallon fish tank filter28K/yr
- betta fish filter18K/yr
- mini aquarium filter20K/yr
- 5 gallon tank filter16K/yr
- 2.5 gallon fish tank filter17K/yr
- betta tank filter14K/yr
- 2 gallon fish tank filter16K/yr
- beta fish filter11K/yr
- mini fish tank filter11K/yr
- 5 gallon filter9K/yr
Reviews and returns
What reviews say buyers love and hate about 5 Gallon Fish Tank Filter
We read the reviews and the return reasons for every product selling here.
“Breaks easily”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common 5 Gallon Fish Tank Filter questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









