---
title: "aquarium filter — €478K/yr Amazon Germany Niche, Score 59/100 - Flapen"
canonical_url: "https://flapen.com/research/de/haustier/aquarium-filter"
last_updated: "2026-07-21T10:12:27.297Z"
locale: en
meta:
description: "aquarium filter shows a sweet-spot price point ($25.59 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "aquarium filter shows a sweet-spot price point ($25.59 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "aquarium filter — €478K/yr Amazon Germany Niche, Score 59/100 - Flapen"
---
# **aquarium filter**
**Worth a look**
Shows a sweet-spot price point ($25.59 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 59Growth 15Conversion 33Competition 78Returns 53Price range 85Avg price 95Brand share 83Review moat 45Quality gap 84
**Avg price**
**Incredible****€25.59**
avg listing price — sweet spot $15–$100
**Price range**
**Great****€4.16–€91.50**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****52%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****37%**
top-5 click share — an open shelf
**Market size**
**Good****€478K**
€478K/yr · 706K searches
**Returns**
**Good****2.9%**
return rate — above 6% kills the launch gate
**Review moat**
**Okay****1,960.24**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Okay****2.6%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-19.2%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon Germany niche tracking, aquarium filter is a €478K/yr Amazon Germany market (706K searches/yr). The top 5 brands hold 52% of demand. Verdict: Worth a look — 59/100.
Data updated Jul 13, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **Market data**
- **Units sold / yr**
- **15K–20K**
- avg 250–500/product
- **Revenue / yr**
- **€384K–€512K**
- units × avg price
- **Launch success**
- **20%**
- 1 of 5 new (360d)
- **Conversion rate**
- **2.6%**
- **Avg BSR**
- **#58**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **73%**
- **Out of stock**
- **2.9%**
- **Avg brand age**
- **48 months**
- **Avg seller age**
- **178 days**
## **Competition**
Clicks spread well past the top 5 (37% combined) — an open shelf where new products get seen.
**Brands**
**22 **▼falling
**Sellers**
**76**
**Top-5 brand share**
**52%**
Top 20: 99%
**Top-5 click share**
**37%**
Top 20: 77%
**Open market**
**43%**
- Tetra17% - JBL11% - OsAtNb9% - NICREW8% - COKDEZ7% - fishkeeper5%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -19.2% search growth over the last 90 days.
20K15KPrime Day '24Spike '24Spike '25Black Friday '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/de/haustier/aquarium-filter/trend)
## **Product shelf**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%3%€14K6%€29K9%€43K12%€57K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 45 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Tetra IN 400 plus Aquarium Innenfilter - Filter für klares und gesundes Wasser mechanische biologische und chemische Filterung geeignet für Aquarien mit 30 bis 60 Liter**Tetra**€17.90**4.2★9,011 rev](https://www.amazon.de/dp/B000XAE6XE) [2**Leise Aquarium Innenfilter Aquarium filter Aquarium Filter Pumpe Aquarium Pumpe mit 2 Filterschwämmen 500-1800L/H Wasserpumpe Sauerstoff Belüftung Wave Maker für 20L-1500L Aquarien**OsAtNb**€15.75**4.1★680 rev](https://www.amazon.de/dp/B091BZPZ44) [3**JBL CristalProf i80 greenline Energieeffizienter Innenfilter für Aquarien mit 60-110 L 6097200**JBL**€27.46**4.2★842 rev](https://www.amazon.de/dp/B00COGOQ2Q) [4**fishkeeper Aquarium Filter Adjustable 500L/H Aquarium innenfilter für 30L-120L Aquarien 4-in-1 Aquarium Pumpe mit Filter Sauerstoff Wavemaker Filterschwamm (6W(500L/H 120L))**fishkeeper**€20.01**4.2★105 rev](https://www.amazon.de/dp/B0FHWT5G8M) [5**NICREW Aquarium Innenfilter Einstellbarer Durchfluss Aquarienfilter mit Wasserpumpe für Aquarium von bis 20L Leise 3 5 W**NICREW**€10.26**4.2★1,325 rev](https://www.amazon.de/dp/B09HC58H5H)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**OMECO 5-in-1 Aquarium Innenfilter mit 6W U-V-Sterilisator und timer 500L/H UVC Klärer Aquarium filter für 60L-150L Aquarien aquarium pumpe mit Belüftung und Regendusche**OMECO**€24.76**15 rev7mo ago](https://www.amazon.de/dp/B0G6DPB4VH) [**hygger Aquarium Innenfilter 300L/H 5W Fish Tank Filter Adjustable Quiet Power Filter with Rainfall Aeration for 15-55L Freshwater and Saltwater Aquariums**hygger**€16.06**20 rev8mo ago](https://www.amazon.de/dp/B0G2GPFTSG) [**fishkeeper Aquarium Filter Adjustable 500L/H Aquarium innenfilter für 30L-120L Aquarien 4-in-1 Aquarium Pumpe mit Filter Sauerstoff Wavemaker Filterschwamm (6W(500L/H 120L))**fishkeeper**€20.01**105 rev9mo ago](https://www.amazon.de/dp/B0FHWT5G8M) [**BAITAI Aquarium Innenfilter mit UV-Sterilisator & Timer 5-in-1 Filterpumpe mit Belüftung & Regendusche 500 L/H Leise für Süß- & Meerwasser geeignet für 50125L Aquarien**BAITAI**€26.81**199 rev9mo ago](https://www.amazon.de/dp/B0FRS4KFV5) [**BAITAI Aquarium Innenfilter mit UV-Sterilisator & Timer 5-in-1 Filterpumpe mit Belüftung & Regendusche 800 L/H Geräuscharm für Süß- & Meerwasser passend für 80267L Aquarien**BAITAI**€27.34**200 rev9mo ago](https://www.amazon.de/dp/B0FRRZDQ7J)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**OMECO 5-in-1 Aquarium Innenfilter mit 6W U-V-Sterilisator und timer 500L/H UVC Klärer Aquarium filter für 60L-150L Aquarien aquarium pumpe mit Belüftung und Regendusche**OMECO**€24.76**4.1★**▲ 300%**](https://www.amazon.de/dp/B0G6DPB4VH) [**Knifel Springbrunnenpumpe 10W 600L/H Schutz vor überhitzung Funktion Ultra Leise Teichpumpe Wasserpumpen Mit 1.5m Kabel für Brunnen Hydroponik-Systeme.Tauchpumpe für Aquarien Durchflussrate.**Knifel**€12.71**4.1★**▲ 216%**](https://www.amazon.de/dp/B0DQ8FPTBH) [**hygger Aquarium Innenfilter 300L/H 5W Fish Tank Filter Adjustable Quiet Power Filter with Rainfall Aeration for 15-55L Freshwater and Saltwater Aquariums**hygger**€16.06**3.8★**▲ 188%**](https://www.amazon.de/dp/B0G2GPFTSG) [**Mini Wasserpumpen(600L/H 10W) Ultra Leise Aquarium pumpe mit hohem Hub brunnenpumpe mit 1 5 m Netzkabel 2 Düsen für Aquarien Teich Brunnen Statuen Hydrokultur Mini Wasserpumpen**CAM2**€8.34**4.4★**▲ 152%**](https://www.amazon.de/dp/B0B5875DJ3) [**Eheim Aquaball 180 Innenfilter**Eheim**€52.39**3.9★**▲ 151%**](https://www.amazon.de/dp/B002Q9GX7M)
**~~View all trending →~~**
## **Reviews**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filterung**27%
*“Aquarium Filter”*
**Qualität insgesamt**11%
*“Super Produkt”*
**Preis-Leistungs-Verhältnis**10%
*“VERY NICE FÜR DEN PREIS”*
**beworben Vs Tatsächliches Produkt**9%
*“Alles Bestens wie beschrieben”*
**Gesamtgröße**5%
*“Passt”*
**Wasserfluss**4%
*“Super Pumpe für kleine Aquarien”*
**Einfache Reinigung**3%
*“leicht zu reinigen”*
**Geräuschpegel**3%
*“super leise”*
**Stärke**3%
*“Stabile Ausführung, gute Bedienungsanleitung, leicht zugänglich zur Reinigung”*
**Druck**3%
*“Super kleine Pumpe”*
### **What buyers complain about **
**Haltbarkeit**26%
*“Nach 2 Minuten defekt”*
**Filterung**16%
*“Der Filter ist leider Müll”*
**Qualität insgesamt**9%
*“Müll”*
**Gesamtgröße**6%
*“Dürfte etwas größer sein”*
**Geräuschpegel**4%
*“brummt recht laut”*
**Einfache Reinigung**3%
*“muss oft gereinigtr werden”*
**Stärke**3%
*“Hält nicht gut zusammen”*
**Funktionalität insgesamt**2%
*“Funktioniert nicht”*
**Preis-Leistungs-Verhältnis**2%
*“Schade ums Geld”*
**Auslaufsicher**2%
*“Undicht”*
### **Top return reasons **
**Gesamtgröße**33%
**Filterung**15%
**Funktionalität insgesamt**11%
**Stärke**7%
**Defekt Material/Teile**7%
**Kompatibilität – insgesamt**5%
**Haltbarkeit**3%
**Geräuschpegel**3%
**beworben Vs Tatsächliches Produkt**3%
**Produktzustand**2%
## **Common questions**
- **Is aquarium filter profitable to sell on Amazon Germany?**
- The niche generates €478K/yr across 45 tracked products. 1 of 5 products launched in the last 360 days are still selling. 90-day search growth is -19.2%. Flapen's verdict: Worth a look (59/100).
- **How competitive is the aquarium filter niche?**
- 22 brands and 76 sellers compete. The top 5 products take 37% of clicks and top 5 brands hold 52% of demand.
- **What do buyers complain about in aquarium filter?**
- Top complaints mined from reviews: Haltbarkeit, Filterung, Qualität insgesamt. The return rate is 2.9%.
- **When does demand for aquarium filter peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the aquarium filter niche?**
- Listings span €4.16–€91.50; the average listing price is €25.59 (sweet spot $15–$100). The average incumbent carries 1,960 reviews — the moat a new listing must climb.
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