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skimmer aquarium

Skip it

Soft demand (-47.8% this quarter) — this niche doesn't clear our bar today.

Market size 15Growth 1Conversion 52Competition 31Returns 44Price range 77Avg price 83Brand share 59Review moat 80Quality gap 92

Quality gap

Great4.0★

avg incumbent rating — lower means beatable quality

Avg price

Great€18.37

avg listing price — sweet spot $15–$100

Review moat

Great398.21

avg incumbent reviews — the moat a new listing must climb

Price range

Great€7.92–€39.05

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

Brand share

Good70%

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

Conversion

Good4.3%

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

Returns

Okay3.5%

return rate — above 5% kills the launch gate

Competition

Okay66%

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

Market size

Bad€61K

€61K/yr · 77K searches

Growth

Bad-47.8%

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

According to Flapen's Amazon Germany niche tracking, skimmer aquarium is a €61K/yr Amazon Germany market (77K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 44/100.

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

skimmer aquarium market data

Units sold / yr
3K–3K
avg 100–250/product
Revenue / yr
€46K–€55K
units × avg price
Conversion rate
4.3%
Avg BSR
#341
Page quality
0%
Prime
95%
Sponsored
63%
Out of stock
1.5%
Avg brand age
58 months
Avg seller age
181 days

Competition & brand share

The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.

Brands

17 rising

Sellers

41

Top-5 brand share

70%

Top 20: 100%

Top-5 click share

66%

Top 20: 100%

Open market

25%

  • Eheim22%
  • Oase15%
  • Juwel Aquarium15%
  • Pawfly11%
  • Fluval6%
  • AquaOne6%

Demand & seasonality

Weekly Amazon search volume, last 83 weeks — -47.8% search growth over the last 90 days.
3K2KSpike '25DecJanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Jan, Feb · busiest ÷ quietest = 2.7×

Top skimmer aquarium search terms

  • skimmer aquarium40K/yr
  • aquarium skimmer19K/yr
  • oberflächenskimmer aquarium9K/yr
  • eheim skimmer6K/yr
  • eheim skim 3503K/yr
All search terms

Top skimmer 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 19 tracked products in this niche — three views at once, no toggling.

What buyers say about skimmer aquarium

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

What buyers love

Qualität insgesamt20%

“Der bisher beste Skimmer”

beworben Vs Tatsächliches Produkt15%

“Fast wie auf den Bildern”

Preis-Leistungs-Verhältnis13%

“Geld erspart”

Einfache Reinigung7%

“leicht zu reinigen”

Design insgesamt7%

“Es fügt sich sehr elegant und unauffällig ins Becken ein”

Geräuschpegel7%

“Crystal Skim 350 ist auch super leise”

Filterung4%

“Praktisch mit dem Fluval Filter AC 20”

Montage/Installation3%

“Installiert, eingesteckt und los”

Benutzerfreundlichkeit3%

“Kein Problem”

Haltbarkeit3%

“Super ist halt Eheim”

What buyers complain about

Qualität insgesamt11%

“Müllprodukt”

Einfache Reinigung11%

“Auch Reinigen etc. hilft da nicht”

Haltbarkeit11%

“War nach 4 Wochen defekt”

Filterung8%

“Da auch mein Filter nach 2 Monaten an Leistung verloren hat, will ich nicht abstreiten, das es damit zusammen hängen könnte”

Geräuschpegel8%

“Tut was er soll aber bisschen laut”

Funktionalität insgesamt7%

“Funktioniert nicht”

Kompatibilität – insgesamt4%

“Hat bei mir an einem ac30 nicht wirklich funktioniert”

Rost/Korrodieren3%

“Gehäuse rostet”

Anleitung/Benutzerhandbuch/Fehlerbehebung3%

“die Gebrauchsanweisung fehlt????.”

Gesamtgröße3%

“größer als erwartet”

Top return reasons

Gesamtgröße23%
Funktionalität insgesamt22%
Defekt Material/Teile10%
Kompatibilität – insgesamt9%
Filterung8%
Geräuschpegel7%
Haltbarkeit4%
Stärke3%
Produktzustand2%
beworben Vs Tatsächliches Produkt2%

Common questions

Is skimmer aquarium profitable to sell on Amazon Germany?
The niche generates €61K/yr across 19 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is -47.8%. Flapen's verdict: Skip it (44/100).
How competitive is the skimmer aquarium niche?
17 brands and 41 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 70% of demand.
What do buyers complain about in skimmer aquarium?
Top complaints mined from reviews: Qualität insgesamt, Einfache Reinigung, Haltbarkeit. The return rate is 3.5%.
When does demand for skimmer aquarium peak?
Demand peaks in Jan–Feb; the busiest month runs 2.7× the quietest.
What does it cost to enter the skimmer aquarium niche?
Listings span €7.92–€39.05; the average listing price is €18.37 (sweet spot $15–$100). The average incumbent carries 398 reviews — the moat a new listing must climb.