1 Gallon Fish Tank Filter
brand-locked demand (top 5 brands take 96% of clicks) — 1 Gallon Fish Tank Filter doesn't clear our bar today.
Flapen Score
Ranks 2,474 of 3,978 Pet Supplies niches · −4 vs the category median of 51
Is 1 Gallon Fish Tank Filter profitable on Amazon?
According to Flapen's Amazon United States niche tracking, 1 Gallon Fish Tank Filter is a $385K/yr Amazon United States market (179K searches/yr). The top 5 brands hold 96% of demand. Verdict: Skip it — 47/100.
1 Gallon Fish Tank Filter: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Not really. Search demand moved -9.4% over the last 90 days and 4.4% of searches end in a purchase.
$385K
revenue / yr
Who owns the niche?
The top 5 brands hold 96% of demand, so 4% of the market is open.
4%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.3★ — the gap to enter on.
0/100
page quality · 25 products
Top 1 Gallon Fish Tank Filter products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
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
NICREW ClassicLED Plus LED Aquarium Light with Timer 21 Watts for 30 to 36 Inch Fish Tank Light Daylight and Moonlight Cycle
- Price
- $41.00
- Rating
- 4.6/5
- Reviews
- 9,021
- Age
- 8y ago
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 C10 24/7 LED Aquarium Light for Plants 12-18 Inches Full Spectrum Fish Tank Light with Timer Brightness Adjustable
- Price
- $17.57
- Rating
- 4.3/5
- Reviews
- 1,480
- Age
- 3y ago
NICREW C10 Plants LED Aquarium Light 18-24 in 13 Watts Full Spectrum Fish Tank Light with Timer Day and Night Cycle Brightness Adjustable
- Price
- $23.88
- Rating
- 4.6/5
- Reviews
- 1,016
- Age
- 3y ago
Trending
90-day click momentum
HSIFMATE Small Fish Tank Filter Hang on Filter for 1-5 Gal Nano Aquarium Ultra Quiet Power Filter with Aeration & Oil Skimmer Adjustable Flow for Betta Shrimp Tank
- Price
- $11.57
- Rating
- 3.6/5
- Reviews
- 11
- Age
- 2mo ago
SmtaqX 8 Pack Aquarium Filter Cartridges Compatible with NICREW Slim Filter Fish Tank Filter Cartridges Replacement
- Price
- $8.90
- Rating
- 4.3/5
- Reviews
- 41
- Age
- 1y 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
NICREW C10 24/7 LED Aquarium Light for Plants 12-18 Inches Full Spectrum Fish Tank Light with Timer Brightness Adjustable
- Price
- $17.57
- Rating
- 4.3/5
- Reviews
- 1,480
- Age
- 3y ago
DaToo Aquarium Hang On Filter Small Fish Tank Hanging Filter Power Waterfall Filtration System
- Price
- $7.97
- Rating
- 3.8/5
- Reviews
- 1,087
- Age
- 5y ago
Newest
by launch dateHSIFMATE Small Fish Tank Filter Hang on Filter for 1-5 Gal Nano Aquarium Ultra Quiet Power Filter with Aeration & Oil Skimmer Adjustable Flow for Betta Shrimp Tank
- Price
- $11.57
- Rating
- 3.6/5
- Reviews
- 11
- Age
- 2mo 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
NICREW NavaReef 65 Reef LED Light 65W Reef Aquarium Lighting for Soft/LPS Corals and Saltwater Fish Tanks Built-in Timer Blue Focused Spectrum
- Price
- $95.60
- Rating
- 4.6/5
- Reviews
- 146
- Age
- 1y ago
SmtaqX 8 Pack Aquarium Filter Cartridges Compatible with NICREW Slim Filter Fish Tank Filter Cartridges Replacement
- Price
- $8.90
- Rating
- 4.3/5
- Reviews
- 41
- Age
- 1y ago
NICREW HyperReef 200 Gen 2 Reef LED Light 200W Reef Aquarium Lighting for SPS LPS Corals and Saltwater Fish Tanks Enhanced Violet and Blue Spectrum Wide Angle Lens 5 Channels Fully Programmable
- Price
- $314.10
- Rating
- 4.4/5
- Reviews
- 258
- Age
- 1y ago
Competition: brands, sellers & click share
The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.
Brands
7 falling
Sellers
21
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
52%
Top 20: 92%
Open market
2%
- NICREW77%
- Tetra7%
- DaToo6%
- Aqueon3%
- Novique2%
- HSIFMATE2%
- Open — no brand owns it (1 brand, 2%)
1 Gallon Fish Tank Filter demand & seasonality
Weekly search volume, with the niche's key stats alongside.
No pronounced peak months · busiest ÷ quietest = 1.5×
Top 1 Gallon Fish Tank Filter search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- nicrew aquarium light21K/yr
- nano aquarium filter18K/yr
- nicrew18K/yr
- nicrew filter14K/yr
- 1 gallon fish tank filter15K/yr
- nano tank filter12K/yr
- shrimp filter10K/yr
- nano filter aquarium8K/yr
- nicrew led aquarium light23K/yr
- beta filter6K/yr
What reviews say buyers love and hate about 1 Gallon Fish Tank Filter
What buyers mention most, as a share of all reviews.
What buyers love
76% of reviews“Filter works great”
“this thing is stunningly bright”
“Great value”
“Good fit”
“The best features:”
What buyers complain about
74% of reviews“Breaks easily”
“Not a good filter for money”
“Super Small”
“Not effective”
“Bad quality”
1 Gallon Fish Tank Filter return rate & reasons
Why buyers send it back, as a share of all return requests.
2.8%
Return rate
51%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common 1 Gallon Fish Tank Filter questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
