aquarium filter
Worth a lookShows a sweet-spot price point ($25.59 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Incredible€25.59avg listing price — sweet spot $15–$100
Price range
Great€4.16–€91.50cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Great4.2★avg incumbent rating — lower means beatable quality
Brand share
Great52%top-5 brand share — no brand owns this niche
Competition
Great37%top-5 click share — an open shelf
Market size
Good€478K€478K/yr · 706K searches
Returns
Good2.9%return rate — above 6% kills the launch gate
Review moat
Okay1,960.24avg incumbent reviews — the moat a new listing must climb
Conversion
Okay2.6%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
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.No pronounced peak months · busiest ÷ quietest = 1.3×
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 45 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
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€17.904.2★9,011 rev
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€15.754.1★680 rev
JBL CristalProf i80 greenline Energieeffizienter Innenfilter für Aquarien mit 60-110 L 6097200
JBL€27.464.2★842 rev
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€20.014.2★105 rev
NICREW Aquarium Innenfilter Einstellbarer Durchfluss Aquarienfilter mit Wasserpumpe für Aquarium von bis 20L Leise 3 5 W
NICREW€10.264.2★1,325 rev
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€24.7615 rev
hygger Aquarium Innenfilter 300L/H 5W Fish Tank Filter Adjustable Quiet Power Filter with Rainfall Aeration for 15-55L Freshwater and Saltwater Aquariums
hygger€16.0620 rev
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€20.01105 rev
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€26.81199 rev
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€27.34200 rev
Trending
90-day click momentumOMECO 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€24.764.1★
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€12.714.1★
hygger Aquarium Innenfilter 300L/H 5W Fish Tank Filter Adjustable Quiet Power Filter with Rainfall Aeration for 15-55L Freshwater and Saltwater Aquariums
hygger€16.063.8★
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€8.344.4★
Eheim Aquaball 180 Innenfilter
Eheim€52.393.9★
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Aquarium Filter”
“Super Produkt”
“VERY NICE FÜR DEN PREIS”
“Alles Bestens wie beschrieben”
“Passt”
“Super Pumpe für kleine Aquarien”
“leicht zu reinigen”
“super leise”
“Stabile Ausführung, gute Bedienungsanleitung, leicht zugänglich zur Reinigung”
“Super kleine Pumpe”
What buyers complain about
“Nach 2 Minuten defekt”
“Der Filter ist leider Müll”
“Müll”
“Dürfte etwas größer sein”
“brummt recht laut”
“muss oft gereinigtr werden”
“Hält nicht gut zusammen”
“Funktioniert nicht”
“Schade ums Geld”
“Undicht”
Top return reasons
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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