Sponge Filter
Sponge Filter shows a fragmented shelf (top 5 take 38% of clicks), but soft demand (-7.6% this quarter) keeps it on the watch list.
Flapen Score
Ranks 1,991 of 3,978 Pet Supplies niches · −1 vs the category median of 51
Is Sponge Filter profitable on Amazon?
According to Flapen's Amazon United States niche tracking, Sponge Filter is a $393K/yr Amazon United States market (731K searches/yr). The top 5 brands hold 90% of demand. Verdict: Worth a look — 50/100.
Sponge Filter: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Worth a look. Search demand moved -7.6% over the last 90 days and 4.0% of searches end in a purchase.
$393K
revenue / yr
Who owns the niche?
The top 5 brands hold 90% of demand, so 10% of the market is open.
10%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.5★ — the gap to enter on.
0/100
page quality · 43 products
Top Sponge 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
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 Bio Sponge Filter Breeding Fry Betta Shrimp Nano Fish Tank (Large up to 60Gal)
- Price
- $8.98
- Rating
- 4.7/5
- Reviews
- 9,197
- Age
- 9y ago
DVHEY 100-120 Gal Large Aquarium Sponge Filter with Air Stone and Ceramic Media 2 Pack Quiet Fish Tank Filters fit Breeding Fry Betta Shrimp Fish Tank
- Price
- $18.52
- Rating
- 4.6/5
- Reviews
- 533
- Age
- 2y ago
hygger Aquarium Double Sponge Filter Comes with 2 Spare Sponges (S)
- Price
- $17.47
- Rating
- 4.4/5
- Reviews
- 1,889
- Age
- 7y ago
Trending
90-day click momentum
hygger Aquarium Double Sponge Filter: Upgraded Sponge Filter with Larger Filtration Area Come with Extendable Clip 2 Spare Biochemical Sponges Bioceramic Balls for Freshwater Saltwater Tank - M
- Price
- $22.38
- Rating
- 4.5/5
- Reviews
- 130
- Age
- 12mo 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
AQQA Aquarium Electric Power Sponge Filter 3W/5W Silence Submersible Foam Filter Sponges Bio Ceramic Media Balls Double Filter for Saltwater Freshwater Fish Tank (S)
- Price
- $23.19
- Rating
- 4.1/5
- Reviews
- 1,186
- Age
- 5y ago
ALEGI Aquarium Sponge Filter Pad Bio Filter Media Foam Sponges Cut-to-Size Foam for Fish Tank (20x20x1 (20PPI))
- Price
- $9.03
- Rating
- 4.7/5
- Reviews
- 1,939
- Age
- 3y ago
hygger Aquarium Sponge Filter 20-55 Gallon Fish Tank Filter for Breeding Fry Shrimp Snails Betta Air-Powered Filter with Reusable Biochemical Ball Spare Sponge Foam Filter
- Price
- $15.59
- Rating
- 4.4/5
- Reviews
- 398
- Age
- 2y ago
Newest
by launch datehygger Aquarium Double Sponge Filter: Upgraded Sponge Filter with Larger Filtration Area Come with Extendable Clip 2 Spare Biochemical Sponges Bioceramic Balls for Freshwater Saltwater Tank - M
- Price
- $22.38
- Rating
- 4.5/5
- Reviews
- 130
- Age
- 12mo ago
Pawfly Aquarium Large Bio Sponge Filter Quiet Betta Fry Shrimp and Small Fish Foam Filter for Fish Tank up to 60 Gallon
- Price
- $8.97
- Rating
- 4.6/5
- Reviews
- 1,761
- Age
- 1y ago
hygger Aquarium Sponge Filter 20-55 Gallon Fish Tank Filter for Breeding Fry Shrimp Snails Betta Air-Powered Filter with Reusable Biochemical Ball Spare Sponge Foam Filter
- Price
- $15.59
- Rating
- 4.4/5
- Reviews
- 398
- Age
- 2y ago
DVHEY 100-120 Gal Large Aquarium Sponge Filter with Air Stone and Ceramic Media 2 Pack Quiet Fish Tank Filters fit Breeding Fry Betta Shrimp Fish Tank
- Price
- $18.52
- Rating
- 4.6/5
- Reviews
- 533
- Age
- 2y ago
DVHEY 2 Pack 60-70 Gal Aquarium Sponge Filter with Air Stone and Ceramic Filter Media Quiet Fish Tank Bio Filter for Breeding Fry Shrimp Betta Fish Tank
- Price
- $16.57
- Rating
- 4.5/5
- Reviews
- 272
- Age
- 2y ago
Competition: brands, sellers & click share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.
Brands
9 falling
Sellers
15
Top-5 brand share
90%
Top 20: 100%
Top-5 click share
38%
Top 20: 79%
Open market
4%
- AQUANEAT42%
- hygger16%
- Pawfly14%
- DVHEY11%
- AQQA8%
- ALEGI6%
- Open — no brand owns it (3 brands, 4%)
Sponge Filter demand & seasonality
Weekly search volume, with the niche's key stats alongside.
No pronounced peak months · busiest ÷ quietest = 1.4×
Top Sponge Filter search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- sponge filter406K/yr
- aquarium sponge filter99K/yr
- sponge filter 20+ gallon55K/yr
- sponge filter 20 gallon28K/yr
- fish tank sponge filter24K/yr
- sponge filters20K/yr
- sponge filter 40 gallon9K/yr
- coarse sponge filter10K/yr
- 20 gallon sponge filter10K/yr
- sponge filter 40+ gallon4K/yr
What reviews say buyers love and hate about Sponge Filter
What buyers mention most, as a share of all reviews.
What buyers love
84% of reviews“Great quality filter”
“Great quality filter”
“Fits good”
“Good deal”
“has been doing a great job at keeping it clean”
What buyers complain about
66% of reviews“Very large”
“Not good filters”
“Broken”
“Very poor quality sponge”
“Does not stay down very well”
Sponge Filter return rate & reasons
Why buyers send it back, as a share of all return requests.
2.0%
Return rate
64%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Sponge 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.
