---
title: "Aquarium Thermometers — £130K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/pet-supplies/aquarium-thermometers"
last_updated: "2026-07-31T07:22:22.795Z"
locale: en
meta:
description: "Niche score 43/100 · £130K/yr market · 215K searches/yr · £4.54 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · £130K/yr market · 215K searches/yr · £4.54 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Aquarium Thermometers — £130K/yr Amazon UK Niche (2026) - Flapen"
---
# **aquarium thermometers**
**Skip it**
Prices mostly outside the sweet spot ($2.79–$8.02) — this niche doesn't clear our bar today.
Market size 29Growth 17Conversion 96Competition 18Returns 98Price range 0Avg price 13Brand share 37Review moat 37Quality gap 78
**Returns**
**Incredible****0.3%**
return rate — above 5% kills the launch gate
**Conversion**
**Incredible****13.3%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****83%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****2,763.15**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****£130K**
£130K/yr · 215K searches
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-16.8%**
90-day search growth — must beat 0% to launch
**Avg price**
**Bad****£4.54**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****£2.79–£8.02**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, aquarium thermometers is a £130K/yr Amazon United Kingdom market (215K searches/yr). The top 5 brands hold 83% of demand. Demand peaks in Jan–Feb. Verdict: Skip it — 43/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **aquarium thermometers market data**
- **Units sold / yr**
- **20K–25K**
- avg 1,250–1,500/product
- **Revenue / yr**
- **£91K–£114K**
- units × avg price
- **Conversion rate**
- **13.3%**
- **Avg BSR**
- **#14**
- **Page quality**
- **0%**
- **Prime**
- **85%**
- **Sponsored**
- **62%**
- **Out of stock**
- **3.4%**
- **Avg brand age**
- **36 months**
- **Avg seller age**
- **195 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**24**
**Top-5 brand share**
**83%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**12%**
- QZQ37% - EETU16% - HOSCARER12% - Thermometer World10% - Zacro8% - MDLSDE5% - Open — no brand owns it (5 brands, 12%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -16.8% search growth over the last 90 days.
5K3KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jan, Feb · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/uk/pet-supplies/aquarium-thermometers/trend)
## **Top aquarium thermometers search terms**
- **aquarium thermometer**81K/yr-14.7%7.8% conv. - **fish tank thermometer**72K/yr-16.3%10.1% conv. - **fish tank thermometer tropical**18K/yr-35.7%10.0% conv. - **aquarium thermometer digital**11K/yr-14.8%6.0% conv. - **fish tank temperature gauge**8K/yr-10.0%8.9% conv. - **digital aquarium thermometer**6K/yr-14.1%7.0% conv. - **thermometer for fish tank**5K/yr+5.4%8.9% conv. - **digital fish tank thermometer**5K/yr-0.7%5.8% conv. - **aquarium temperature gauge**5K/yr-17.9%7.1% conv. - **fish tank thermometer stick on**3K/yr-36.0%11.4% conv. [**All search terms **](https://flapen.com/research/uk/pet-supplies/aquarium-thermometers/search-terms)
## **Top aquarium thermometers 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.
0%10%£13K20%£26K30%£39K40%£52K1101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**QZQ Fish Tank Thermometer Aquarium Thermometer Digital Wireless Touch Stick LED Display 1C for Monitoring The Fish Tank Aquarium Temperature Accessories**QZQ**£5.25**4.4★975 rev](https://www.amazon.co.uk/dp/B0D8W8HG3F) [2**Glass Aquarium Thermometer with Safe Zone Section and Suction Cup for Tropical Freshwater and Marine Saltwater Aquariums**EETU**£3.53**4.1★623 rev](https://www.amazon.co.uk/dp/B00Q54VQQ2) [3**HOSCARER Fish Tank Thermometer Aquarium Thermometer Digital LED Wireless Precise Display 1/2F Energy-saving Adhesive Fish Tank Accessories**HOSCARER**£4.87**4.4★57 rev](https://www.amazon.co.uk/dp/B0FRSJHMKP) [4**Twin Pack Fish Tank Thermometer Strips - LCD Temperature Gauge Stick on Aquarium Thermometer Strip for Temperature Control**Thermometer World**£2.79**4.4★660 rev](https://www.amazon.co.uk/dp/B07N2Z1HDN) [5**Aquarium Thermometer - Digital Thermometer with Probe and Suction Cup Reptile Fish Tank Thermometer with Large LCD Display Terrarium Water Temperature Test**Zacro**£5.78**4.5★14,274 rev](https://www.amazon.co.uk/dp/B01A0TMS6Y)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**QZQ Fish Tank Thermometer Aquarium Thermometer Wireless Touch Stick Digital Aquarium Thermometer LED Display 1F for Monitoring The Fish Tank Aquarium Temperature Accessories (2 Pack Black)**QZQ**£8.02**975 rev4mo ago](https://www.amazon.co.uk/dp/B0GS1XP2WL) [**Fish Tank Thermometer Digital Aquarium Thermometer Energy-saving Adhesive Fish Tank Accessories LED Precise Display 1C for Tropical Aquarium/Turtle Reptile Terrarium**LYZHZHIUONGEI**£4.02**11 rev8mo ago](https://www.amazon.co.uk/dp/B0G3X2C6HJ) [**HOSCARER Fish Tank Thermometer Aquarium Thermometer Digital LED Wireless Precise Display 1/2F Energy-saving Adhesive Fish Tank Accessories**HOSCARER**£4.87**57 rev10mo ago](https://www.amazon.co.uk/dp/B0FRSJHMKP) [**QZQ Fish Tank Thermometer LED Touch Screen Aquarium Thermometer Digital Wireless Precise Display 1/2F Energy-saving Adhesive Fish Tank Accessories**QZQ**£5.60**42 rev11mo ago](https://www.amazon.co.uk/dp/B0FN7L4CSN) [**Aquarium Thermometer Digital LCD Thermometer Fish Tank Probe**MDLSDE**£5.07**27 rev11mo ago](https://www.amazon.co.uk/dp/B0FMDDLQ9J)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**QZQ Fish Tank Thermometer Aquarium Thermometer Wireless Touch Stick Digital Aquarium Thermometer LED Display 1F for Monitoring The Fish Tank Aquarium Temperature Accessories (2 Pack Black)**QZQ**£8.02**4.4★**▲ 233%**](https://www.amazon.co.uk/dp/B0GS1XP2WL) [**Aquarium Thermometer Digital LCD Thermometer Fish Tank Probe**MDLSDE**£5.07**4.9★**▲ 137%**](https://www.amazon.co.uk/dp/B0FMDDLQ9J) [**Fish Tank Thermometer Digital Aquarium Thermometer Energy-saving Adhesive Fish Tank Accessories LED Precise Display 1C for Tropical Aquarium/Turtle Reptile Terrarium**LYZHZHIUONGEI**£4.02**3.5★**▲ 112%**](https://www.amazon.co.uk/dp/B0G3X2C6HJ) [**Glass Aquarium Thermometer with Safe Zone Section and Suction Cup for Tropical Freshwater and Marine Saltwater Aquariums**EETU**£3.53**4.1★**▲ 102%**](https://www.amazon.co.uk/dp/B00Q54VQQ2) [**Precision Glass Aquarium and Fish Tank Thermometer - Accurate Temperature Monitoring in Celsius and Fahrenheit with Suction Fixing**Glamza**£3.95**4.2★**▲ 50%**](https://www.amazon.co.uk/dp/B0CKTPGYF7)
**~~View all trending →~~**
## **What buyers say about aquarium thermometers**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Very high quality very accurate”*
**Advertised Vs Actual Product**14%
*“Does the job perfectly”*
**Ease Of Use**13%
*“Easy to use”*
**Value For Money**12%
*“Very good value for money”*
**Efficiency**9%
*“Works perfectly”*
**Design-Overall**8%
*“What I really appreciate is the design”*
**Adhesion/Stickiness**6%
*“no problems sticking or staying stuck”*
**Display-Overall**4%
*“The LED display is bright”*
**Functionality-Overall**2%
*“Product operates as expected”*
**Size-Overall**2%
*“Nice size”*
### **What buyers complain about **
**Durability**12%
*“Broke after a couple of months”*
**Functionality-Overall**11%
*“Dont work”*
**Size-Overall**10%
*“Not Fit For Purpose”*
**Quality-Overall**8%
*“Junk”*
**Display-Overall**6%
*“However the display isn't always lit up”*
**Color**5%
*“I cant see any colour”*
**Ease Of Use**5%
*“hard to read”*
**Adhesion/Stickiness**5%
*“Awful adhesive, doesnt read the temperate and completely useless”*
**Battery Life**4%
*“not sure how easy they will be to remove though after battery dies”*
**Value For Money**3%
*“Not worth the money”*
### **Top return reasons **
**Functionality-Overall**32%
**Adhesion/Stickiness**20%
**Defective Material/Parts**12%
**Heating**8%
**Compatibility-Overall**6%
**Display-Overall**6%
**Color**4%
**Durability**3%
**Quality-Overall**3%
**Advertised Vs Actual Product**3%
## **Common questions**
- **Is aquarium thermometers profitable to sell on Amazon United Kingdom?**
- The niche generates £130K/yr across 13 tracked products. 0 of 5 products launched in the last 360 days are still selling. 90-day search growth is -16.8%. Flapen's verdict: Skip it (43/100).
- **How competitive is the aquarium thermometers niche?**
- 11 brands and 24 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 83% of demand.
- **What do buyers complain about in aquarium thermometers?**
- Top complaints mined from reviews: Durability, Functionality-Overall, Size-Overall. The return rate is 0.3%.
- **When does demand for aquarium thermometers peak?**
- Demand peaks in Jan–Feb; the busiest month runs 1.5× the quietest.
- **What does it cost to enter the aquarium thermometers niche?**
- Listings span £2.79–£8.02; the average listing price is £4.54 (sweet spot $15–$100). The average incumbent carries 2,763 reviews — the moat a new listing must climb.
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