Fish Tank Filter
MaybeThe products selling today average only 4.0★. But demand is soft, at -14.2% this quarter, so Fish Tank Filter is a Maybe.
- Flapen Score
- 54 / 100Top 31% of 875 Pet Supplies niches · +4 vs the category median of 5054
- Market size
- £601K/yr976K searches / yr
- 90-day growth
- -14.2%search demand this quarter
- Competition
- 62%top-5 click share · 15 brands · 84 sellers
Flapen Score
Fish Tank Filter against its category
The dotted line is the Pet Supplies average. Past it, Fish Tank Filter is stronger. Inside it, weaker.
Market
The Fish Tank Filter market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Fish Tank Filter 976K times last year and spent an estimated £601K. The top 5 brands take 74% of clicks. Flapen scores it 54 out of 100, a Maybe.
01 · Demand
An estimated 3.9% of those searches ended in a purchase.
Shoppers searched for this 976K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 3.9% of those searches ended in a purchase. Searches in the last 90 days moved -14.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £601K a year.
- Searches, last 12 months
- 976K
- Growth, 90 days vs prior 90
- -14.2%
- Conversion, latest week
- 3.9%
- Market size, estimated
- £601Ka year
- Peak month
- February1.2× the quietest month
- Top search term
- fish tank filter429K searches a year
02 · Price
A sale here is worth £15.68.
Listings sell for £15.68 on average, from £7.71 to £37.55. Amazon reports units sold in ranges. This niche sold 30K to 40K a year. The average listing sells 1,000 to 1,250 of them. At £15.68 that is £16K to £20K a year per listing.
- Average price
- £15.68inside the $15 to $100 sweet spot
- Price range
- £7.71–£37.55
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 30K–40K
- Units per listing a year
- 1,000–1,250
- Revenue per listing a year
- £16K–£20K
- Returns
- 2.5%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
77% of listings pay for placement with sponsored ads. 91% ship with Prime. On an average day, 2.1% of listings are out of stock. The average listing ranks #20 within Fish & Aquatic Pets. It carries 1,440 reviews at 4.02 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 77%
- Prime listings
- 91%
- Out of stock, average day
- 2.1%
- Average rank
- #20in Fish & Aquatic Pets
- Average rating
- 4.02 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 1,440per listing
- Listings tracked
- 22
04 · Newcomers
1 of last year's 3 launches cleared the first-year sales bar.
3 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 44 months on average, so the names here are settling in.
- Launched, last 12 months
- 3
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 44 months
Products
Top Fish Tank Filter products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 29, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
NICREW Fish Tank Filter Internal Aquarium Filter for Small Tank Coldwater or Tropical Aquariums Up to 20L Black
- Price
- £11.15
- Rating
- 4.3/5
- Reviews
- 2,242
- Age
- 4y ago

OsAtNb Quiet Fish Tank Filter 4-in-1 Internal Aquarium Filter for 20L-200L Submersible Water Pump Oxygen Aeration Wave Maker Water Change for Betta Turtle Pond Fish Garden(S)
- Price
- £16.53
- Rating
- 3.8/5
- Reviews
- 873
- Age
- 5y ago

Interpet Internal Aquarium Fish Tank Filter Bio CF1 Includes Coir Tech Bio Cartridges High Flow Silent Filtration Cleans Water for Coldwater & Tropical 36-68 Litres (Aquarium length up to 60cm)
- Price
- £12.81
- Rating
- 4.2/5
- Reviews
- 1,672
- Age
- 12y ago

Interpet Internal Aquarium Fish Tank PF1 Power Filter Cleans Water for Coldwater & Tropical Aquariums Up to 68 Litre black/blue
- Price
- £13.16
- Rating
- 4.2/5
- Reviews
- 2,747
- Age
- 18y ago

Craftsboys Fish Tank Filter Silent Internal Aquarium Filter Clean Water Air Pump Make Waves (4W-450L/H Black)
- Price
- £8.20
- Rating
- 3.9/5
- Reviews
- 879
- Age
- 4y ago
Trending
estimated 90-day click momentum
Aquapapa U-V Fish Tank Filter 8W 500L/H Aquarium Filter Pump with 6-Layer Filtration for 30110L Tanks Internal Multifunctional Fish Tank Pump with Sponge Filter for Crystal Clear Water
- Price
- £26.40
- Rating
- 4.2/5
- Reviews
- 23
- Age
- 3mo ago

Pawfly 3 W Small Fish Tank Filter 300 L Aquarium Filter Internal Submersible Aquarium Filter with Foam & Adjustable Water Pump Quiet Filter for 30-80 L Fish Tanks
- Price
- £9.78
- Rating
- 3.5/5
- Reviews
- 43
- Age
- 8mo ago

PYPABL Submersible Fish Tank Internal Filter Mini Aquarium Filter with Water Pump for up to 75L Fish and Shrimp Tank(3W for 3-40L Tank)
- Price
- £8.55
- Rating
- 4.4/5
- Reviews
- 24
- Age
- 8mo ago

BAITAI Internal UV Fish Tank Filter 400L/H 4W Aquarium Filter Pump Turns Green Water to Clear 5-in-1 Filter Pump for 15-80L Aquarium Flow Rate and Direction Adjustable
- Price
- £20.55
- Rating
- 3.9/5
- Reviews
- 309
- Age
- 3y ago

Interpet Internal Aquarium Fish Tank Filter Bio CF2 Includes Coir Tech Bio Cartridges High Flow Silent Filtration Cleans Water for Coldwater & Tropical 69-110 Litres (Aquarium length up to 80cm)
- Price
- £19.81
- Rating
- 4.3/5
- Reviews
- 1,020
- Age
- 12y ago
Newest
by launch date
Aquapapa U-V Fish Tank Filter 8W 500L/H Aquarium Filter Pump with 6-Layer Filtration for 30110L Tanks Internal Multifunctional Fish Tank Pump with Sponge Filter for Crystal Clear Water
- Price
- £26.40
- Rating
- 4.2/5
- Reviews
- 23
- Age
- 3mo ago

PYPABL Submersible Fish Tank Internal Filter Mini Aquarium Filter with Water Pump for up to 75L Fish and Shrimp Tank(3W for 3-40L Tank)
- Price
- £8.55
- Rating
- 4.4/5
- Reviews
- 24
- Age
- 8mo ago

Pawfly 3 W Small Fish Tank Filter 300 L Aquarium Filter Internal Submersible Aquarium Filter with Foam & Adjustable Water Pump Quiet Filter for 30-80 L Fish Tanks
- Price
- £9.78
- Rating
- 3.5/5
- Reviews
- 43
- Age
- 8mo ago

AQQA Fish Tank Filter 550L/h Internal Aquarium Filter 6W Quiet Fish Tank Filter Pump for Tanks up to 130L
- Price
- £16.02
- Rating
- 3.8/5
- Reviews
- 75
- Age
- 1y ago

VILLNO 8W 400LPH Ultra Powerful Aquarium Filter for 30-90L Fish Tank 3-IN-1 Adjustable Fish Tank Filter with Biochemical Sponge Internal Submersible Fish Tank Filters for Turtle/Shrimp/Breeding
- Price
- £11.29
- Rating
- 4.0/5
- Reviews
- 101
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 62% of clicks. Leaders hold, but buyers still shop past them.
Brands
15 falling
Sellers
84
Est. top-5 brand share
74%
Top 20: 100%
Est. top-5 click share
62%
Top 20: 98%
Open market
22%
- NICREW27%
- Interpet18%
- OsAtNb13%
- Craftsboys8%
- Pawfly7%
- BAITAI5%
Demand
Fish Tank Filter search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.2×
Search terms
Top Fish Tank Filter search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- fish tank filter429K/yr
- aquarium filter185K/yr
- fish tank pump50K/yr
- fish tank filter pump45K/yr
- fish filter31K/yr
- small fish tank filter31K/yr
- filter for fish tanks24K/yr
- fish tank pump and filter24K/yr
- fish tank filters20K/yr
- aquarium pumps & filters20K/yr
Reviews and returns
What reviews say buyers love and hate about Fish Tank Filter
We read the reviews and the return reasons for every product selling here.
“Broke within a week”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Fish Tank Filter questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









