Sponge Filter 5 Gallon
brand-locked demand (top 5 brands take 91% of clicks) — Sponge Filter 5 Gallon 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 Sponge Filter 5 Gallon profitable on Amazon?
According to Flapen's Amazon United States niche tracking, Sponge Filter 5 Gallon is a $156K/yr Amazon United States market (273K searches/yr). The top 5 brands hold 91% of demand. Demand peaks in May. Verdict: Skip it — 47/100.
Sponge Filter 5 Gallon: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Not really. Search demand moved +1.2% over the last 90 days and 5.2% of searches end in a purchase.
$156K
revenue / yr
Who owns the niche?
The top 5 brands hold 91% of demand, so 9% of the market is open.
9%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.4★ — the gap to enter on.
0/100
page quality · 33 products
Top Sponge Filter 5 Gallon 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
AQUANEAT 3 Pack Aquarium Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank (Small up to 10Gal)
- Price
- $6.55
- Rating
- 4.7/5
- Reviews
- 3,351
- Age
- 9y ago
Pawfly 3 Pack Aquarium Sponge Filter Quiet Betta Fry Shrimp and Small Fish Foam Filter for Tiny Fish Tank up to 10 Gallon
- Price
- $6.11
- Rating
- 4.6/5
- Reviews
- 2,249
- Age
- 4y ago
AQUANEAT Aquarium Air Powered Sponge Filter Fish Tank Bio Bubble Filter with Airline Tubing Valves Suction Cup(up to 10Gal)
- Price
- $6.33
- Rating
- 4.7/5
- Reviews
- 3,143
- Age
- 9y ago
AQUANEAT Aquarium Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank (Small up to 10Gal)
- Price
- $5.92
- Rating
- 4.7/5
- Reviews
- 9,197
- Age
- 9y ago
Pawfly Aquarium Sponge Filter Mini Sponge Filter Kit with Airline Tubing and Control Valve for Small Fish Tank up to 3 Gallon
- Price
- $5.92
- Rating
- 4.5/5
- Reviews
- 1,964
- Age
- 5y ago
Trending
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
AQUANEAT Aquarium Air Powered Sponge Filter Fish Tank Bio Bubble Filter with Airline Tubing Valves Suction Cup(up to 10Gal)
- Price
- $6.33
- Rating
- 4.7/5
- Reviews
- 3,143
- Age
- 9y ago
Pawfly Aquarium Sponge Filter Mini Sponge Filter Kit with Airline Tubing and Control Valve for Small Fish Tank up to 3 Gallon
- Price
- $5.92
- Rating
- 4.5/5
- Reviews
- 1,964
- Age
- 5y ago
UPETTOOLS Mini Aquarium Sponge Filter Small Fish Tank Filter Submersible Fish Filter Built-in Air Bubble Stone and Bio Balls for Fish Tanks up to 5 Gallon (Air Pump Not Included)
- Price
- $8.50
- Rating
- 4.4/5
- Reviews
- 229
- Age
- 2y ago
AQUANEAT Aquarium Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank (Middle up to 20Gal)
- Price
- $7.86
- Rating
- 4.7/5
- Reviews
- 9,197
- Age
- 5y ago
Newest
by launch dateCarefree 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
UPETTOOLS Mini Aquarium Sponge Filter Small Fish Tank Filter Submersible Fish Filter Built-in Air Bubble Stone and Bio Balls for Fish Tanks up to 5 Gallon (Air Pump Not Included)
- Price
- $8.50
- Rating
- 4.4/5
- Reviews
- 229
- Age
- 2y ago
Pawfly Mini Aquarium Sponge Filter Small Fish Tank Internal Filter with Foam and Air Stone Submersible Bio Sponge Filter for Fish Tanks up to 5 Gallon (Air Pump & Airline Tubing Not Included)
- Price
- $7.49
- Rating
- 4.2/5
- Reviews
- 541
- Age
- 2y ago
hygger Aquarium Sponge Filter 8-20 Gallon Small Fish Tank Filter for Turtle Breeding Fry Shrimp Snails Betta Air-Powered Filter with Reusable Biochemical Ball Spare Sponge Foam Filter
- Price
- $13.66
- Rating
- 4.4/5
- Reviews
- 398
- Age
- 2y 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
Competition: brands, sellers & click share
The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.
Brands
12 rising
Sellers
18
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
46%
Top 20: 86%
Open market
7%
- AQUANEAT41%
- Pawfly27%
- hygger14%
- AQQA6%
- Carefree Fish3%
- DEGGOX2%
- Open — no brand owns it (6 brands, 7%)
Sponge Filter 5 Gallon demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: May · busiest ÷ quietest = 1.7×
Top Sponge Filter 5 Gallon search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- sponge filter 5 gallon56K/yr
- sponge filter 10 gallon49K/yr
- sponge filter 10+ gallon43K/yr
- small sponge filter30K/yr
- mini sponge filter17K/yr
- nano sponge filter13K/yr
- 10 gallon sponge filter12K/yr
- sponge filter 5+ gallon11K/yr
- 5 gallon sponge filter10K/yr
- sponge filter for 10 gallon tank8K/yr
What reviews say buyers love and hate about Sponge Filter 5 Gallon
What buyers mention most, as a share of all reviews.
What buyers love
78% of reviews“Decent Filter”
“Good Quality”
“Good deal”
“Its a very snug fit”
“It cleans well”
What buyers complain about
70% of reviews“Broken”
“Short one”
“Not filtering”
“Very poor quality sponge”
“DOESN'T WORK”
Sponge Filter 5 Gallon return rate & reasons
Why buyers send it back, as a share of all return requests.
2.4%
Return rate
59%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Sponge Filter 5 Gallon 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.
