Fish Tank Filter Cartridges
Fish Tank Filter Cartridges shows low returns (0.8%), but soft demand (-27.2% this quarter) keeps it on the watch list.
Flapen Score
Is Fish Tank Filter Cartridges profitable on Amazon?
According to Flapen's Amazon United Kingdom niche tracking, Fish Tank Filter Cartridges is a £75K/yr Amazon United Kingdom market (61K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Feb. Verdict: Worth a look — 52/100.
Fish Tank Filter Cartridges: the Amazon niche in one read
Everything a seller checks before entering, in three answers.
Is the demand real?
Worth a look. Search demand moved -27.2% over the last 90 days and 11.1% of searches end in a purchase.
£75K
revenue / yr
Who owns the niche?
The top 5 brands hold 84% of demand, so 16% of the market is open.
16%
open market share
Is there a way in?
Listing quality. The average product page scores 0/100 on content standards. Incumbents average 4.3★ — the gap to enter on.
0/100
page quality · 39 products
Top Fish Tank Filter Cartridges products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Top sellers
by 90-day click share
Interpet 3 Month Service Pack for the Interpet Internal Cartridge Filter CF1 (3 x Filter Cartridge 3 x Algaway Pad) clear
- Price
- £5.30
- Rating
- 4.5/5
- Reviews
- 3,080
- Age
- 12y ago
Finest-Filters Compatible with Ciano Water Clear & Protect CF20 CF40 Aquarium Filter Media - Water Clear Cartridge S (2 Pack)
- Price
- £5.31
- Rating
- 4.4/5
- Reviews
- 65
- Age
- 1y ago
CIANO AQUARIUM FILTER MEDIA REPLACEMENT SET - SMALL / CF40
- Price
- £19.66
- Rating
- 4.5/5
- Reviews
- 455
- Age
- 10y ago
CIANO Aquarium Consumables Replacement Filter Cartridges for Aquarium Filter Pack 3 Months Size S Crystal Water for Fish Impurity-Free and Odourless Effective Cleaning
- Price
- £17.20
- Rating
- 3.8/5
- Reviews
- 35
- Age
- 7y ago
CIANO AQUARIUM FILTER MEDIA - WATER CLEAR CARTRIDGE SM / CF40 X2
- Price
- £7.43
- Rating
- 4.5/5
- Reviews
- 1,247
- Age
- 10y ago
Trending
90-day click momentum
Finest-Filters Compatible with Interpet Internal CF Cartridge Filters - Fish Tank Filter Cartridges Interpet Filter CF1Filter Service Pack 3 Month Multiple Pack (3Filter Cartridges and 3 Pads)
- Price
- £4.96
- Rating
- 2.8/5
- Reviews
- 5
- Age
- 4mo ago
beaufan 14 Set Filter Cartridges - Compatible with Tetra EasyCrystal Filter 250 & FilterBox 300 Aquarium Filters | Replacement for Tetra Whisper Internal Power Filter (5-10 Gallons)
- Price
- £15.48
- Rating
- 4.6/5
- Reviews
- 14
- Age
- 7mo ago
CIANO Aquarium Consumables Replacement Filter Cartridges for Aquarium Filter Pack 3 Months Size M Crystal Water for Fish Impurity-Free and Odourless Effective Cleaning
- Price
- £26.01
- Rating
- 3.5/5
- Reviews
- 22
- Age
- 8y ago
Finest-Filters Compatible with Ciano Water Clear/Bio Bact/Stop Algae CF20 CF40 Aquarium Filter Media Cartridge S Full Set (6 Pack)
- Price
- £13.00
- Rating
- 3.4/5
- Reviews
- 11
- Age
- 1y ago
DXPETA CF1 Filter Service Pack 4 Fish Tank Filter Cartridges and 4 Green White Pads Compatible with Interpet CF1 Internal Filters Small Aquarium Filter Replacement
- Price
- £8.65
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 11mo ago
Newest
by launch dateFinest-Filters Compatible with Interpet Internal CF Cartridge Filters - Fish Tank Filter Cartridges Interpet Filter CF1Filter Service Pack 3 Month Multiple Pack (3Filter Cartridges and 3 Pads)
- Price
- £4.96
- Rating
- 2.8/5
- Reviews
- 5
- Age
- 4mo ago
beaufan 14 Set Filter Cartridges - Compatible with Tetra EasyCrystal Filter 250 & FilterBox 300 Aquarium Filters | Replacement for Tetra Whisper Internal Power Filter (5-10 Gallons)
- Price
- £15.48
- Rating
- 4.6/5
- Reviews
- 14
- Age
- 7mo ago
DXPETA CF1 Filter Service Pack 4 Fish Tank Filter Cartridges and 4 Green White Pads Compatible with Interpet CF1 Internal Filters Small Aquarium Filter Replacement
- Price
- £8.65
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 11mo ago
Haliya 3 Month Service Kit Compatible with Interpet CF1 Filter
- Price
- £5.99
- Rating
- 4.1/5
- Reviews
- 66
- Age
- 1y ago
Finest-Filters Compatible with Ciano Water Clear/Bio Bact/Stop Algae CF20 CF40 Aquarium Filter Media Cartridge S Full Set (6 Pack)
- Price
- £13.00
- Rating
- 3.4/5
- Reviews
- 11
- Age
- 1y ago
Competition: brands, sellers & click share
The top 5 products take 45% of clicks — established leaders, but buyers still shop beyond them.
Brands
18 rising
Sellers
68
Top-5 brand share
84%
Top 20: 100%
Top-5 click share
45%
Top 20: 85%
Open market
13%
- Ciano36%
- Finest-Filters23%
- Interpet11%
- Tetra9%
- Marina5%
- CWA2%
- Open — no brand owns it (12 brands, 13%)
Fish Tank Filter Cartridges demand & seasonality
Weekly search volume, with the niche's key stats alongside.
Peak months: Feb · busiest ÷ quietest = 1.6×
Top Fish Tank Filter Cartridges search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.
- ciano fish tank filter cartridges15K/yr
- fish tank filter cartridges16K/yr
- ciano filter7K/yr
- tetra filter6K/yr
- interpet cf1 filter 3 month service kit5K/yr
- ciano4K/yr
- cf1 filter service pack 3 month4K/yr
- fish filter cartridges2K/yr
- tetra easy crystal filter 250/3002K/yr
What reviews say buyers love and hate about Fish Tank Filter Cartridges
What buyers mention most, as a share of all reviews.
What buyers love
90% of reviews“Good value”
“Budget friendly good quality filter”
“As good as the branded. but cheaper”
“Fit well”
“AS DESCRIBED”
What buyers complain about
78% of reviews“Worst filter I have ever seen”
“Cheap knock off version of a similar product, terrible quality, avoid”
“Not fit for purpose”
“Doesn't last long”
“Hardly any flow”
Fish Tank Filter Cartridges return rate & reasons
Why buyers send it back, as a share of all return requests.
0.8%
Return rate
67%
Fixable by listing
The "fixable" share counts expectation-mismatch reasons — size, look, advertised-vs-actual — that better copy and images address.
Common Fish Tank Filter Cartridges questions
The questions sellers ask about this niche, answered from the tracked metrics.
Related niches
Same-category niches scoring near this one — the next ones worth researching.
Best Flapen score
The highest-scoring niches we track right now, across every category.
