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aktivkohle aquarium

Skip it

Soft demand (-35.1% this quarter) — this niche doesn't clear our bar today.

Market size 15Growth 7Conversion 37Competition 82Returns 92Price range 33Avg price 95Brand share 32Review moat 44Quality gap 45

Avg price

Incredible€35.59

avg listing price — sweet spot $15–$100

Returns

Great1.1%

return rate — above 5% kills the launch gate

Competition

Great33%

top-5 click share — an open shelf

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Review moat

Okay2,100.71

avg incumbent reviews — the moat a new listing must climb

Conversion

Okay2.9%

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

Price range

Okay€4.26–€263.47

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

Brand share

Okay86%

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

Market size

Bad€61K

€61K/yr · 58K searches

Growth

Bad-35.1%

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

According to Flapen's Amazon Germany niche tracking, aktivkohle aquarium is a €61K/yr Amazon Germany market (58K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Jan–Nov–Dec. Verdict: Skip it — 45/100.

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

aktivkohle aquarium market data

Units sold / yr
3K–3K
avg 0–100/product
Revenue / yr
€89K–€107K
units × avg price
Conversion rate
2.9%
Avg BSR
#104
Page quality
0%
Prime
96%
Sponsored
57%
Out of stock
0.0%
Avg brand age
62 months
Avg seller age
187 days

Competition & brand share

Clicks spread well past the top 5 (33% combined) — an open shelf where new products get seen.

Brands

15 rising

Sellers

63

Top-5 brand share

86%

Top 20: 100%

Top-5 click share

33%

Top 20: 73%

Open market

11%

  • Fluval59%
  • ARKA16%
  • beaufan4%
  • JBL4%
  • Dennerle3%
  • Wessper3%
  • Open — no brand owns it (9 brands, 11%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -35.1% search growth over the last 90 days.
2K2KPrime Day '24Spike '24Prime Day '25Spike '25Black Friday '25SepDecMarJunAugNovMarMay

Peak months: Jan, Nov, Dec · busiest ÷ quietest = 2.1×

Top aktivkohle aquarium search terms

  • fluval filter18K/yr
  • fluval18K/yr
  • aktivkohle aquarium12K/yr
  • aktivkohlefilter aquarium5K/yr
  • fluval filtermaterial4K/yr
All search terms

Top aktivkohle 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%3%€2K6%€4K9%€5K12%€7K101001K10K100K 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 aktivkohle aquarium

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

What buyers love

Filterung23%

“Super Filter”

Qualität insgesamt20%

“Super Produkt”

Benutzerfreundlichkeit9%

“Super easy und einfach”

Gesamtgröße7%

“Passt”

beworben Vs Tatsächliches Produkt7%

“Erfüllt sein Zweck”

Preis-Leistungs-Verhältnis5%

“super Preis”

Einfache Reinigung4%

“Super für Raumluft Reiniger Geräte statt teure Filter”

Geruch3%

“Geruch ist immer noch vorhanden”

Stärke3%

“Stabile Ausführung, gute Bedienungsanleitung, leicht zugänglich zur Reinigung”

Materialqualität2%

“Sehr sauberes Material”

What buyers complain about

Filterung22%

“Unnötige Filterung Kohle”

Haltbarkeit20%

“sie fällt fast täglich ab.”

Preis-Leistungs-Verhältnis11%

“Sehr schade um das Geld”

Funktionalität insgesamt6%

“Funktioniert bei mir nicht”

Auslaufsicher5%

“Undicht”

Heizung5%

“sehr warm, als ich sie berührte”

Qualität insgesamt5%

“Müll”

Gesamtgröße2%

“Und sind einfach riesig und nicht schön”

Stärke2%

“Ansonsten fiel zu schwach”

Hartes Gefühl2%

“leider ist sie so hart, dass sie sich nicht auflöst.”

Top return reasons

Gesamtgröße32%
Filterung18%
Funktionalität insgesamt10%
Kompatibilität – insgesamt9%
Defekt Material/Teile7%
beworben Vs Tatsächliches Produkt3%
Auslaufsicher3%
Produktzustand3%
Qualität insgesamt2%
Stärke2%

Common questions

Is aktivkohle aquarium profitable to sell on Amazon Germany?
The niche generates €61K/yr across 49 tracked products. 1 of 4 products launched in the last 360 days are still selling. 90-day search growth is -35.1%. Flapen's verdict: Skip it (45/100).
How competitive is the aktivkohle aquarium niche?
15 brands and 63 sellers compete. The top 5 products take 33% of clicks and top 5 brands hold 86% of demand.
What do buyers complain about in aktivkohle aquarium?
Top complaints mined from reviews: Filterung, Haltbarkeit, Preis-Leistungs-Verhältnis. The return rate is 1.1%.
When does demand for aktivkohle aquarium peak?
Demand peaks in Jan–Nov–Dec; the busiest month runs 2.1× the quietest.
What does it cost to enter the aktivkohle aquarium niche?
Listings span €4.26–€263.47; the average listing price is €35.59 (sweet spot $15–$100). The average incumbent carries 2,101 reviews — the moat a new listing must climb.