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schwammfilter aquarium

Skip it

Soft demand (-29.3% this quarter) — this niche doesn't clear our bar today.

Market size 15Growth 10Conversion 36Competition 55Returns 41Price range 81Avg price 86Brand share 54Review moat 77Quality gap 91

Quality gap

Great4.1★

avg incumbent rating — lower means beatable quality

Avg price

Great€19.39

avg listing price — sweet spot $15–$100

Price range

Great€6.72–€110.40

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Great466.52

avg incumbent reviews — the moat a new listing must climb

Competition

Good52%

top-5 click share — leaders hold, buyers still browse

Brand share

Good73%

top-5 brand share — brands hold most of the demand

Returns

Okay3.7%

return rate — above 5% kills the launch gate

Conversion

Okay2.9%

search→purchase rate — share of searches ending in a sale

Market size

Bad€61K

€61K/yr · 109K searches

Growth

Bad-29.3%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon Germany niche tracking, schwammfilter aquarium is a €61K/yr Amazon Germany market (109K searches/yr). The top 5 brands hold 73% of demand. Verdict: Skip it — 46/100.

Data updated Jul 13, 2026 · scored weekly · How we score niches

schwammfilter aquarium market data

Units sold / yr
3K–4K
avg 100–250/product
Revenue / yr
€58K–€78K
units × avg price
Conversion rate
2.9%
Avg BSR
#257
Page quality
0%
Prime
96%
Sponsored
68%
Out of stock
5.1%
Avg brand age
47 months
Avg seller age
187 days

Competition & brand share

The top 5 products take 52% of clicks — established leaders, but buyers still shop beyond them.

Brands

16 flat

Sellers

42

Top-5 brand share

73%

Top 20: 100%

Top-5 click share

52%

Top 20: 93%

Open market

23%

  • Aquael44%
  • Pawfly9%
  • Huijukon8%
  • Tetra8%
  • AQQA5%
  • Monsully4%

Demand

Weekly Amazon search volume, last 29 weeks — -29.3% search growth over the last 90 days.
3K2KDec '25Jan '26Feb '26Mar '26Apr '26May '26Jun '26

Top schwammfilter aquarium search terms

  • schwammfilter aquarium20K/yr
  • schwammfilter14K/yr
  • luftheber filter aquarium14K/yr
  • aquael13K/yr
  • aquael pat mini10K/yr
  • aquael filter10K/yr
  • aquarium schwammfilter8K/yr
  • luftheber aquarium7K/yr
  • schwammfilter aquarium klein4K/yr
  • aquael pat mini filter4K/yr
All search terms

Top schwammfilter aquarium products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%10%€6K20%€12K30%€18K40%€24K1101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 24 tracked products in this niche — three views at once, no toggling.

What buyers say about schwammfilter aquarium

What buyers praise and complain about, mined from review topics.

What buyers love

Filterung41%

“Bester Filter”

Preis-Leistungs-Verhältnis17%

“Super Preis-leistung, top”

Qualität insgesamt8%

“Es gibt ja etliche gute Bewertungen”

Einfache Reinigung5%

“Reinigung ist sehr easy, da der Schaumstoff sehr leicht auszuwaschen ist”

Gesamtgröße5%

“Passt”

beworben Vs Tatsächliches Produkt4%

“Macht was er soll”

Benutzerfreundlichkeit3%

“Einfach in der Handhabung, funktioniert Einwandfrei”

Stärke3%

“Leistungsstark mit Risiko”

Sprühen/Durchfluss3%

“Strömung angenehm sanft – ideal für Garnelen oder Betta-Aquarien.”

Geruch2%

“riecht nicht nach Plastik oder Weichmachern, sondern sehr neutral.”

What buyers complain about

Filterung21%

“Der Filter löst sich immer wieder”

Haltbarkeit13%

“Müll 2ter kaputt 6 Monate”

Qualität insgesamt7%

“Billigst verarbeitet, fällt auseinander”

Funktionalität insgesamt7%

“Und zu dem nicht vollständig”

Einfache Reinigung5%

“man muss ihn zu oft reinigen.”

Montage/Installation5%

“Das erste Zusammenbauen ist aufgrund der Verarbeitung etwas schwierig”

Wasserfluss5%

“Es kommt kein Wasser oben aus der Pumpe mehr raus”

Wasserbeständigkeit3%

“die pumpe defekt,kein wasser”

Auslaufsicher3%

“leider nach 2,5 Jahren undicht.”

Benutzerfreundlichkeit3%

“Daher nicht brauchbar”

Top return reasons

Gesamtgröße38%
Filterung20%
Funktionalität insgesamt8%
Defekt Material/Teile7%
Haltbarkeit5%
Stärke4%
Kompatibilität – insgesamt4%
Qualität insgesamt2%
Produktzustand2%
beworben Vs Tatsächliches Produkt2%

Common questions

Is schwammfilter aquarium profitable to sell on Amazon Germany?
The niche generates €61K/yr across 25 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -29.3%. Flapen's verdict: Skip it (46/100).
How competitive is the schwammfilter aquarium niche?
16 brands and 42 sellers compete. The top 5 products take 52% of clicks and top 5 brands hold 73% of demand.
What do buyers complain about in schwammfilter aquarium?
Top complaints mined from reviews: Filterung, Haltbarkeit, Qualität insgesamt. The return rate is 3.7%.
What does it cost to enter the schwammfilter aquarium niche?
Listings span €6.72–€110.40; the average listing price is €19.39 (sweet spot $15–$100). The average incumbent carries 467 reviews — the moat a new listing must climb.