Aquarium Sponge
Aquarium Sponge shows a sweet-spot price point ($37.43 avg), but brand-locked demand (top 5 brands take 94% of clicks) keeps it on the watch list.
Flapen Score
Top 30% of 3,978 Pet Supplies niches · +4 vs the category median of 51
Is Aquarium Sponge profitable on Amazon?
According to Flapen's Amazon United States niche tracking, Aquarium Sponge is a $318K/yr Amazon United States market (186K searches/yr). The top 5 brands hold 94% of demand. Demand peaks in May–Jun. Verdict: Worth a look — 55/100.
Aquarium Sponge: 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 +22.6% over the last 90 days and 4.5% of searches end in a purchase.
$318K
revenue / yr
Who owns the niche?
The top 5 brands hold 94% of demand, so 6% of the market is open.
6%
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 · 20 products
Top Aquarium Sponge 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
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

AQUANEAT 2 Pack Aquarium Bio Sponge Filter Media Pad Cut-to-Size Open Cell Foam Sheet for Fish Tank Sump (9 x 9 x 0.5) Black
- Price
- $6.07
- Rating
- 4.6/5
- Reviews
- 370
- Age
- 4y ago

Pawfly 4 Pack Aquarium Bio Sponge Filter Media Pad Filter Foam Sponge Pads Cut-to-Size Foam for Fish Tank Filters Sumps Ponds Hydroponics 6.3 x 5.5 x 0.78
- Price
- $6.01
- Rating
- 4.5/5
- Reviews
- 281
- Age
- 1y ago

GutterStuff Original Gutter Guard - 4-Inch K Style Foam Gutter Filter Insert with Year Round Leaf Protection & Easy DIY Installation - GSK432-2
- Price
- $64.10
- Rating
- 4.1/5
- Reviews
- 794
- Age
- 8y ago

Pro Gutter Guard - 5-Inch K Style Foam Gutter Filter Insert with Year Round Leaf Protection & Easy DIY Installation - GSK532-3
- Price
- $109.29
- Rating
- 3.9/5
- Reviews
- 98
- Age
- 16y ago
Trending
90-day click momentum
Pro Gutter Guard - 5-Inch K Style Foam Gutter Filter Insert with Year Round Leaf Protection & Easy DIY Installation - GSK532-3
- Price
- $109.29
- Rating
- 3.9/5
- Reviews
- 98
- Age
- 16y ago

GutterStuff Original Gutter Guard - 6-Inch K Style Foam Gutter Filter Insert with Year Round Leaf Protection & Easy DIY Installation - GSK632-2
- Price
- $100.31
- Rating
- 4.1/5
- Reviews
- 794
- Age
- 8y ago

GutterStuff Original Gutter Guard - 4-Inch K Style Foam Gutter Filter Insert with Year Round Leaf Protection & Easy DIY Installation - GSK432-2
- Price
- $64.10
- Rating
- 4.1/5
- Reviews
- 794
- Age
- 8y ago

GutterStuff Original Gutter Guard - 5-Inch Half Round Foam Gutter Filter Insert with Year Round Leaf Protection & Easy DIY Installation - GSR532-2
- Price
- $64.49
- Rating
- 3.9/5
- Reviews
- 52
- Age
- 8y ago

GutterStuff EZ Gutter Guard - 5-Inch K Style Foam Gutter Filter Insert with Year Round Leaf Protection & Easy DIY Installation - GSK532-1
- Price
- $62.80
- Rating
- 3.7/5
- Reviews
- 54
- Age
- 7y ago
Newest
by launch date
Borlech Aquarium Bio Filter Sponge Pad - Cut-to-Size Aquarium Filter Media for Fish Tank Pond Sump - Mechanical & Biological Filtration (18.5x18.5x0.8 20PPI 1 Pack)
- Price
- $8.52
- Rating
- 4.6/5
- Reviews
- 773
- Age
- 1y ago

Pawfly 4 Pack Aquarium Bio Sponge Filter Media Pad Filter Foam Sponge Pads Cut-to-Size Foam for Fish Tank Filters Sumps Ponds Hydroponics 6.3 x 5.5 x 0.78
- Price
- $6.01
- Rating
- 4.5/5
- Reviews
- 281
- Age
- 1y 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

ALEGI Aquarium Sponge Filter Pad Bio Filter Media Foam Sponges Cut-to-Size Foam for Fish Tank (20x20x1 (50PPI))
- Price
- $8.97
- Rating
- 4.7/5
- Reviews
- 1,939
- Age
- 3y ago

ALEGI Aquarium Sponge Filter Pad Bio Filter Media Foam Sponges Cut-to-Size Foam for Fish Tank (20x20x1 (35PPI))
- Price
- $9.02
- Rating
- 4.7/5
- Reviews
- 1,939
- Age
- 3y ago
Competition: brands, sellers & click share
The top 5 products take 59% of clicks — established leaders, but buyers still shop beyond them.
Brands
8 falling
Sellers
21
Top-5 brand share
94%
Top 20: 100%
Top-5 click share
59%
Top 20: 100%
Open market
4%
- ALEGI42%
- GUTTERSTUFF23%
- AQUANEAT20%
- Pawfly7%
- Borlech3%
- koxuyim2%
- Open — no brand owns it (2 brands, 4%)
Aquarium Sponge demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: May, Jun · busiest ÷ quietest = 1.7×
Top Aquarium Sponge search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- aquarium sponge33K/yr
- gutter foam23K/yr
- filter foam20K/yr
- aquarium foam20K/yr
- matala filter media pads9K/yr
- aquarium filter foam13K/yr
- matala7K/yr
- foam filter10K/yr
- foam gutter inserts4K/yr
- gutter foam inserts7K/yr
What reviews say buyers love and hate about Aquarium Sponge
What buyers mention most, as a share of all reviews.
What buyers love
87% of reviews“This filter works great”
“great value for the money”
“Fits good”
“Other than that, no complaints”
“exactly what I was looking for”
What buyers complain about
68% of reviews“as you can see in my photo it was far too short”
“Poor quality”
“1 filter missing”
“Not one inch thick”
“They are more expensive than basic filter pads”
Aquarium Sponge return rate & reasons
Why buyers send it back, as a share of all return requests.
1.1%
Return rate
48%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Aquarium Sponge questions
The questions sellers ask about this niche, answered from the tracked metrics.
Best Flapen score
The highest-scoring niches we track right now, across every category.









