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aquarium dünger

Skip it

Soft demand (-41.2% this quarter) — this niche doesn't clear our bar today.

Market size 19Growth 4Conversion 84Competition 33Returns 99Price range 36Avg price 27Brand share 25Review moat 45Quality gap 24

Returns

Incredible0.2%

return rate — above 5% kills the launch gate

Conversion

Great9.2%

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

Review moat

Okay1,993.89

avg incumbent reviews — the moat a new listing must climb

Price range

Okay€3.45–€21.39

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

Competition

Okay65%

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

Avg price

Okay€9.20

avg listing price — sweet spot $15–$100

Brand share

Okay90%

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

Quality gap

Bad4.6★

avg incumbent rating — lower means beatable quality

Market size

Bad€75K

€75K/yr · 89K searches

Growth

Bad-41.2%

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

According to Flapen's Amazon Germany niche tracking, aquarium dünger is a €75K/yr Amazon Germany market (89K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 37/100.

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

aquarium dünger market data

Units sold / yr
6K–8K
avg 250–500/product
Revenue / yr
€55K–€74K
units × avg price
Conversion rate
9.2%
Avg BSR
#28
Page quality
0%
Prime
89%
Sponsored
61%
Out of stock
3.3%
Avg brand age
98 months
Avg seller age
179 days

Competition & brand share

The top 5 products take 65% of clicks — established leaders, but buyers still shop beyond them.

Brands

9 falling

Sellers

43

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

65%

Top 20: 100%

Open market

6%

  • Tetra43%
  • ARKA24%
  • JBL12%
  • sera6%
  • Aqua Rebell6%
  • AquariumDirekt5%
  • Open — no brand owns it (3 brands, 6%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -41.2% search growth over the last 90 days.
3K2KPrime Day '24Spike '24Black Friday '24Prime Day '25Spike '25Black Friday '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Feb · busiest ÷ quietest = 2.0×

Top aquarium dünger search terms

  • aquarium dünger32K/yr
  • aquarium pflanzen dünger22K/yr
  • pflanzendünger aquarium13K/yr
  • dünger aquarium8K/yr
  • aquarium pflanzendünger6K/yr
  • dünger aquarienpflanzen4K/yr
  • aquarium dünger testsieger3K/yr
All search terms

Top aquarium dünger 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%€8K20%€15K30%€23K40%€30K1001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 18 tracked products in this niche — three views at once, no toggling.

What buyers say about aquarium dünger

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

What buyers love

Benutzerfreundlichkeit23%

“Leichte Handhabung”

beworben Vs Tatsächliches Produkt19%

“Macht was es soll”

Qualität insgesamt16%

“Gutes Produkt”

Farbe11%

“bekommen eine schöne grüne Farbe.”

Preis-Leistungs-Verhältnis9%

“Preisleistung stimmt absolut überein”

Pflanzenwachstum8%

“Pflanzen gedeien super”

Kompatibilität – insgesamt4%

“Es scheint zu funktionieren bei cryptocorynen”

Effizienz4%

“Funktioniert, auf gute Belüftung achten”

Frische4%

“Die Blätter wirken frischer, grüner und gesünder”

Abgabemechanismus1%

“Der Dünger lässt sich einfach dosieren”

What buyers complain about

Auslaufsicher20%

“Behälter ausgelaufen”

Pflanzenwachstum15%

“Pflanzen lösen sich komplett auf”

Farbe13%

“ihr Farbe ist blass.”

Inhaltsstoffe – insgesamt10%

“Es ist nirgends angegeben, wieviel wovon enthalten ist”

Gesamtgröße10%

“Die wurden alle mit der Zeit sehr Groß”

Funktionalität insgesamt8%

“bringt nichts”

Anleitung/Benutzerhandbuch/Fehlerbehebung5%

“auch habe ich keine Anleitung dadurch bzw. Dosierhilfe”

beworben Vs Tatsächliches Produkt5%

“generell kaum Informationen auf der Verpackung”

Textur/Konsistenz – insgesamt5%

“Enthält der Konsistenz nachvermutlich 98% Wasser”

Produktzustand5%

“Neuware?? Artikel wurde ohne Kappe geliefert, kann nicht sagen ob das Produkt schon mal offen war”

Top return reasons

Auslaufsicher23%
Gesamtgröße17%
Funktionalität insgesamt15%
Produktzustand13%
Kompatibilität – insgesamt10%
beworben Vs Tatsächliches Produkt5%
Umweltfreundlichkeit4%
Zertifizierungen2%
Benutzerfreundlichkeit2%
Qualität insgesamt2%

Common questions

Is aquarium dünger profitable to sell on Amazon Germany?
The niche generates €75K/yr across 18 tracked products. 90-day search growth is -41.2%. Flapen's verdict: Skip it (37/100).
How competitive is the aquarium dünger niche?
9 brands and 43 sellers compete. The top 5 products take 65% of clicks and top 5 brands hold 90% of demand.
What do buyers complain about in aquarium dünger?
Top complaints mined from reviews: Auslaufsicher, Pflanzenwachstum, Farbe. The return rate is 0.2%.
When does demand for aquarium dünger peak?
Demand peaks in Jan–Feb; the busiest month runs 2.0× the quietest.
What does it cost to enter the aquarium dünger niche?
Listings span €3.45–€21.39; the average listing price is €9.20 (sweet spot $15–$100). The average incumbent carries 1,994 reviews — the moat a new listing must climb.