fish tank syphon
Worth a lookShows beatable incumbent ratings (3.9★), but a small market ($64K/yr) keeps it on the watch list.
Quality gap
Incredible3.9★avg incumbent rating — lower means beatable quality
Returns
Great1.4%return rate — above 5% kills the launch gate
Brand share
Great56%top-5 brand share — no brand owns this niche
Conversion
Great7.3%search→purchase rate — share of searches ending in a sale
Price range
Good£4.75–£29.49cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good54%top-5 click share — leaders hold, buyers still browse
Review moat
Okay2,224.54avg incumbent reviews — the moat a new listing must climb
Avg price
Okay£9.97avg listing price — sweet spot $15–$100
Market size
Bad£64K£64K/yr · 88K searches
Growth
Bad-17.1%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, fish tank syphon is a £64K/yr Amazon United Kingdom market (88K searches/yr). The top 5 brands hold 56% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
fish tank syphon market data
- Units sold / yr
- 6K–8K
- avg 100–250/product
- Revenue / yr
- £60K–£80K
- units × avg price
- Conversion rate
- 7.3%
- Avg BSR
- #23
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 92%
- Out of stock
- 2.9%
- Avg brand age
- 41 months
- Avg seller age
- 205 days
Competition & brand share
The top 5 products take 54% of clicks — established leaders, but buyers still shop beyond them.Brands
21 rising
Sellers
30
Top-5 brand share
56%
Top 20: 99%
Top-5 click share
54%
Top 20: 97%
Open market
36%
- Luigi's19%
- QZQ14%
- boxtech9%
- NICREW8%
- Interpet7%
- enomol7%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -17.1% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.4×
Top fish tank syphon search terms
- fish tank syphon22K/yr
- aquarium syphon16K/yr
- aquarium siphon11K/yr
- aquarium water change pump10K/yr
- fish tank siphon9K/yr
- fish tank water change pump6K/yr
- fish tank syphon gravel cleaner7K/yr
- syphon pump fish tank4K/yr
- aquarium syphon pump2K/yr
Top fish tank syphon 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.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Luigis Syphon Fish Tank Cleaner for Aquarium - Filtered Hand Vacuum Syphon Pump - 3-in-1 Water Changer and Gravel Washer for Fish Tank - Fish Tank Cleaning Kit
Luigi's£7.614.3★28,727 rev
![QZQ Aquarium Gravel Cleaner [2024 Edition] Vacuum Fish Tank Vacuum Cleaner Tools for Aquarium Water Changer with Aquarium Thermometers Fish Net kit Use for Fish Tank Cleaning Gravel and Sand](https://m.media-amazon.com/images/I/51S+2N20RtL.jpg)
QZQ Aquarium Gravel Cleaner [2024 Edition] Vacuum Fish Tank Vacuum Cleaner Tools for Aquarium Water Changer with Aquarium Thermometers Fish Net kit Use for Fish Tank Cleaning Gravel and Sand
QZQ£10.474.1★4,449 rev
boxtech Fish Tank Water Changer Vacuum Siphon Kit 3 in 1 Aquarium Siphon Gravel Cleaner Pump Sand Cleaner Kit for Drain and Replace Water
boxtech£13.864.3★6,745 rev
NICREW 2-in-1 Aquarium Cleaner & Water Changer Manual Gravel and Sand Vacuum Siphon Pump for Easy Fish Tank Cleaning Aquarium Accessories
NICREW£12.484.2★1,570 rev
enomol Gravel Vacuum for Aquarium Water Changer Fish Tank Cleaning Tools Siphon Universal Quick Pump Aquarium Water Changing (30ft)
enomol£29.494.4★5,539 rev
Newest
by launch date
Oneyee 1 Pcs Syphon Cleaner for Aquarium Syphon Pump Siphon Hand Fish Tank Cleaner Fish Tank Vacuum Daily Water Changing Filter 3-in-1 Water Changer and Gravel Washer For Fish Tank Cleaning Kit
Oneyee£4.7513 rev
1 Pcs Syphon Fish Tank Cleaner for Aquarium Daily Water Changing Filter Hand Fish Tank Cleaner Fish Tank Vacuum Syphon Pump Siphon Sand Cleaning Aquarium Siphon Tank for Fish Tank Cleaning Kit
Prospira£4.9622 rev
NICREW 2-in-1 Aquarium Cleaner & Water Changer Manual Gravel and Sand Vacuum Siphon Pump for Easy Fish Tank Cleaning Aquarium Accessories
NICREW£12.481,570 rev
AQQA Fish Tank Siphon Gravel Cleaner Adjustable Flow Aquarium Gravel Cleaner Vacuum with Handle Manual Water Change and Sand Washing (AQ193-S)
AQQA£13.3949 rev
QZQ Fish Tank Syphon Cleaning Kit Super Strong Fish Tank Siphon With Double Sponge Algal Scraper Aquarium Cleaning Kit For Fish Tank Aquarium Gravel Cleaner
QZQ£13.4220 rev
Trending
90-day click momentumOneyee 1 Pcs Syphon Cleaner for Aquarium Syphon Pump Siphon Hand Fish Tank Cleaner Fish Tank Vacuum Daily Water Changing Filter 3-in-1 Water Changer and Gravel Washer For Fish Tank Cleaning Kit
Oneyee£4.752.8★
NICREW 2-in-1 Aquarium Cleaner & Water Changer Manual Gravel and Sand Vacuum Siphon Pump for Easy Fish Tank Cleaning Aquarium Accessories
NICREW£12.484.2★
QZQ Fish Tank Syphon Cleaning Kit Super Strong Fish Tank Siphon With Double Sponge Algal Scraper Aquarium Cleaning Kit For Fish Tank Aquarium Gravel Cleaner
QZQ£13.423.4★
AQQA Fish Tank Siphon Gravel Cleaner Adjustable Flow Aquarium Gravel Cleaner Vacuum with Handle Manual Water Change and Sand Washing (AQ193-S)
AQQA£13.393.8★
LIAMGUS 2 pcs fish tank cleaner fish tank gravel cleaner Aquarium Fish Tank Siphon and Gravel Cleaner Cleaner Siphon Pump Kit for Fish Tank Water Change
LIAMGUS£5.543.8★
What buyers say about fish tank syphon
What buyers praise and complain about, mined from review topics.What buyers love
“useful cleaning kit”
“Easy to use”
“Product is absolutely top notch”
“Excellent product for the money”
“Better than expected”
“to be honest I dont see this breaking anytime soon”
“Great for water change”
“Its quick and even on full flow it doesnt fill a bucket in seconds like I thought it would which gives me time to get a quite a bit done”
“Great size and very easy to use”
“Works well”
What buyers complain about
“just not the best quality build”
“Broke very easily”
“DOES NOT WORK”
“doesn't make cleaning any easier sadly”
“Cheap, would not buy again”
“Too small”
“stopping the flow completely”
“a little bit flimsy”
“Cheap material”
“the tube is thin and splits easily”
Top return reasons
Common questions
- Is fish tank syphon profitable to sell on Amazon United Kingdom?
- The niche generates £64K/yr across 24 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -17.1%. Flapen's verdict: Worth a look (53/100).
- How competitive is the fish tank syphon niche?
- 21 brands and 30 sellers compete. The top 5 products take 54% of clicks and top 5 brands hold 56% of demand.
- What do buyers complain about in fish tank syphon?
- Top complaints mined from reviews: Quality-Overall, Durability, Functionality-Overall. The return rate is 1.4%.
- When does demand for fish tank syphon peak?
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- What does it cost to enter the fish tank syphon niche?
- Listings span £4.75–£29.49; the average listing price is £9.97 (sweet spot $15–$100). The average incumbent carries 2,225 reviews — the moat a new listing must climb.