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Aquarium Filter Sponge

soft demand (-6.1% this quarter) — Aquarium Filter Sponge doesn't clear our bar today.

Flapen Score

41
Skip it

Ranks 3,275 of 3,978 Pet Supplies niches · −10 vs the category median of 51

Market size 27Growth 22Conversion 75Competition 35Returns 91Price range 39Avg price 24Brand share 25Review moat 50Quality gap 40
This niche Category average · 3,978 niches

Is Aquarium Filter Sponge profitable on Amazon?

According to Flapen's Amazon United States niche tracking, Aquarium Filter Sponge is a $116K/yr Amazon United States market (195K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in May. Verdict: Skip it — 41/100.

Aquarium Filter Sponge: the Amazon niche in one read

Everything a seller checks before entering, in three answers.

Is the demand real?

Not really. Search demand moved -6.1% over the last 90 days and 6.9% of searches end in a purchase.

$116K

revenue / yr

Units sold / yr15K
Search volume / yr-6.1%195K
Conversion rate6.9%
Avg price$8.55

Who owns the niche?

The top 5 brands hold 90% of demand, so 10% of the market is open.

10%

open market share

Brands · sellers9 · 19
Top-5 product click share64%
Open market10%
Avg brand age40 months

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 · 20 products

Sponsored placement100%
New entrants (1y)1· 0 succeeded
Avg rating4.5★
Avg reviews1,536

Top Aquarium Filter Sponge products & what they sell for

Every tracked product — its share of the shelf, its review moat, and what it sells for.

Competition: brands, sellers & click share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

$0$12K$23K$35K$46K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

9 falling

Sellers

19

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

64%

Top 20: 100%

Open market

7%

  • AQUANEAT59%
  • ALEGI17%
  • Pawfly5%
  • Fluval5%
  • HUYAYA4%
  • Borlech3%
  • Open — no brand owns it (3 brands, 7%)

Aquarium Filter Sponge demand & seasonality

Weekly search volume, with the niche's key stats alongside.

Volume195KCVR6.9%Products20Brands9Top 5 Brands90%OOS Rate0.0%Rating4.5★Reviews1,536Avg BSR#122
4K3KSpike '26JunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: May · busiest ÷ quietest = 1.8×

Top Aquarium Filter Sponge search terms shoppers use

The exact queries shoppers type, with yearly volume, growth and conversion.

  • aquarium filter sponge63K/yr
  • filter sponge26K/yr
  • pre filter sponge18K/yr
  • fish tank filter sponge14K/yr
  • prefilter sponge10K/yr
  • filter sponges fish tank14K/yr
  • fish filter sponge9K/yr
  • pre filter sponge aquarium7K/yr
  • aquarium prefilter sponge5K/yr
  • prefilter sponge for aquarium8K/yr

What reviews say buyers love and hate about Aquarium Filter Sponge

What buyers mention most, as a share of all reviews.

What buyers love

90% of reviews
Filtration29%

Filter is good quality

Size-Overall14%

fits like a glove

Quality-Overall13%

I think they are well made

Value For Money11%

Good deal

Ease Of Cleaning7%

It keeps the tank clean

What buyers complain about

71% of reviews
Thickness17%

Material is too thin

Size-Overall15%

Too small

Filtration9%

Filter dimensions inaccurate

Advertised Vs Actual Product8%

Not as advertised

Quality-Overall8%

its lower quality

Aquarium Filter Sponge return rate & reasons

Why buyers send it back, as a share of all return requests.

1.2%

Return rate

62%

Fixable by listing

The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.

1Size-Overall
49%
2Filtration
15%
3Advertised Vs Actual Product
11%
4Thin
5%
5Thickness
3%

Common Aquarium Filter Sponge questions

The questions sellers ask about this niche, answered from the tracked metrics.

Flapen scores Aquarium Filter Sponge 41/100 on Amazon United States — Skip it. The niche generates $116K/yr across 20 tracked products. 0 of 1 products launched in the last 360 days are still selling. Search demand moved -6.1% over the last 90 days.
Search demand for Aquarium Filter Sponge on Amazon United States peaks in May, where the busiest month runs 1.8× the quietest.