Small Aquarium Heater
FailDemand is soft, at -28.5% this quarter, so Small Aquarium Heater is a Fail.
- Flapen Score
- 48 / 100Ranks 2,345 of 3,978 Pet Supplies niches · −3 vs the category median of 5148
- Market size
- $612K/yr436K searches / yr
- 90-day growth
- -28.5%search demand this quarter
- Competition
- 68%top-5 click share · 10 brands · 17 sellers
Flapen Score
Small Aquarium Heater against its category
The dotted line is the Pet Supplies average. Past it, Small Aquarium Heater is stronger. Inside it, weaker.
Market
The Small Aquarium Heater market on Amazon at a glance
Shoppers on Amazon United States searched for Small Aquarium Heater 436K times last year and spent an estimated $612K. The top 5 brands take 91% of clicks. Demand peaks in Jan–Feb–Dec. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 8.1% of those searches ended in a purchase.
Shoppers searched for this 436K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 8.1% of those searches ended in a purchase. Searches in the last 90 days moved -28.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $612K a year.
- Searches, last 12 months
- 436K
- Growth, 90 days vs prior 90
- -28.5%
- Conversion, latest week
- 8.1%
- Market size, estimated
- $612Ka year
- Peak month
- January2.2× the quietest month
- Top search term
- hygger aquarium heater57K searches a year
02 · Price
A sale here is worth $17.29.
Listings sell for $17.29 on average, from $6.67 to $45.65. Amazon reports units sold in ranges. This niche sold 40K to 50K a year. The average listing sells 1,250 to 1,500 of them. At $17.29 that is $22K to $26K a year per listing.
- Average price
- $17.29inside the $15 to $100 sweet spot
- Price range
- $6.67–$45.65
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 40K–50K
- Units per listing a year
- 1,250–1,500
- Revenue per listing a year
- $22K–$26K
- Returns
- 3.1%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
89% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 3.0% of listings are out of stock. The average listing ranks #21 within Fish & Aquatic Pets. It carries 1,694 reviews at 4.31 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 89%
- Prime listings
- 100%
- Out of stock, average day
- 3.0%
- Average rank
- #21in Fish & Aquatic Pets
- Average rating
- 4.31 starsAmazon United States average 4.42 stars
- Average reviews
- 1,694per listing
- Listings tracked
- 18
04 · Newcomers
2 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 49 months on average, so the names here are settling in.
- Launched, last 12 months
- 2
- Successful launches
- 2Amazon's first-year sales bar
- Average brand age
- 49 months
Products
Top Small Aquarium Heater 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 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
hygger Small Aquarium Betta Heater Submersible Fish Tank Heater 10W/25W/50W/100W with LED Digital Display Suitable for Marine Saltwater and Freshwater up to 5/10/16/26 Gallon
- Price
- $16.73
- Rating
- 4.6/5
- Reviews
- 589
- Age
- 3y ago

DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker
- Price
- $6.70
- Rating
- 4.4/5
- Reviews
- 5,854
- Age
- 6y ago

AQUANEAT Aquarium Heater 25W Small Betta Fish Tank Heater Mini Preset Water Thermostat with a Thermometer
- Price
- $6.67
- Rating
- 4.4/5
- Reviews
- 1,238
- Age
- 2y ago

PULACO 25Watt Mini Aquarium Submersible Betta Heater with Free Thermometer Strip for 1-6 Gallon Fish Tanks (Preset Temperature 78)
- Price
- $9.68
- Rating
- 4.3/5
- Reviews
- 11,992
- Age
- 6y ago

Orlushy 25W Small Submersible Aquarium Heater Constant Temperature Betta Fish Tank Heater of 78for 1-6 Gallons Freshwater & Saltwater Tanks
- Price
- $12.86
- Rating
- 4.0/5
- Reviews
- 2,183
- Age
- 3y ago
Trending
estimated 90-day click momentum
hygger Aquarium Heater 50W/100W/150W/200W Adjustable Power Fish Tank Heater with Auto Power-Off and High-Temp Protection Upgraded Titanium Turtle Tank Heater for Saltwater and Freshwater
- Price
- $35.39
- Rating
- 4.4/5
- Reviews
- 17
- Age
- 7mo ago

HiTauing Aquarium Heater 25W/50W/100W/200W/300W Adjustable Knob Fish Tank Heater with Digital Thermometer Submersible Betta/Turtle Tank Heater for Freshwater and Saltwater Tanks
- Price
- $9.86
- Rating
- 3.9/5
- Reviews
- 65
- Age
- 9mo ago

hygger Small Aquarium Betta Heater Submersible Fish Tank Heater 10W/25W/50W/100W with LED Digital Display Suitable for Marine Saltwater and Freshwater up to 5/10/16/26 Gallon
- Price
- $16.73
- Rating
- 4.6/5
- Reviews
- 589
- Age
- 3y ago

hygger 200w Aquarium Heater Submersible Fish Tank Heater with Intelligent Temperature Control and Leaving Water Automatically Stop Heating System for 20-40 Gallon Tanks
- Price
- $35.73
- Rating
- 4.5/5
- Reviews
- 148
- Age
- 2y ago

AQUANEAT Aquarium Heater 50W Fish Tank Heater Adjustable Submersible Water Thermostat with Thermometer
- Price
- $8.92
- Rating
- 4.1/5
- Reviews
- 876
- Age
- 2y ago
Newest
by launch date
hygger Aquarium Heater 50W/100W/150W/200W Adjustable Power Fish Tank Heater with Auto Power-Off and High-Temp Protection Upgraded Titanium Turtle Tank Heater for Saltwater and Freshwater
- Price
- $35.39
- Rating
- 4.4/5
- Reviews
- 17
- Age
- 7mo ago

HiTauing Aquarium Heater 25W/50W/100W/200W/300W Adjustable Knob Fish Tank Heater with Digital Thermometer Submersible Betta/Turtle Tank Heater for Freshwater and Saltwater Tanks
- Price
- $9.86
- Rating
- 3.9/5
- Reviews
- 65
- Age
- 9mo ago

Novique 25W Mini Aquarium Heater Submersible Constant Temperature Fish Tank Betta Heater Free Thermometer Sticker Suitable for 1-6 Gallons Saltwater and Freshwater Tanks
- Price
- $8.87
- Rating
- 4.4/5
- Reviews
- 104
- Age
- 1y ago

hygger Mini Fish Tank Submersible Heater 50W for 5-10 Gallons Small Betta Aquarium Heater with Digital Display Controller Adjustable Temperature
- Price
- $19.78
- Rating
- 4.5/5
- Reviews
- 353
- Age
- 2y ago

hygger Mini Fish Tank Submersible Heater 20W for 1-5 Gallons Desktop Betta Aquarium Heater with Digital Display Controller Adjustable Temperature
- Price
- $17.75
- Rating
- 4.6/5
- Reviews
- 287
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 68% of clicks. Leaders hold, but buyers still shop past them.
Brands
10 falling
Sellers
17
Est. top-5 brand share
91%
Top 20: 100%
Est. top-5 click share
68%
Top 20: 100%
Open market
6%
- hygger39%
- AQUANEAT17%
- DaToo16%
- PULACO11%
- Orlushy8%
- HITOP3%
- Open — no brand owns it (4 brands, 6%)
Demand
Small Aquarium Heater search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Feb, Dec · busiest ÷ quietest = 2.2×
Search terms
Top Small Aquarium Heater search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- hygger aquarium heater57K/yr
- small aquarium heater45K/yr
- aquarium heater 5 gallon39K/yr
- fish tank heater 5 gallon tank34K/yr
- mini aquarium heater25K/yr
- small fish tank heater27K/yr
- betta heater20K/yr
- 5 gallon fish tank heater23K/yr
- hygger heater18K/yr
- fish tank heater 3 gallon21K/yr
Reviews and returns
What reviews say buyers love and hate about Small Aquarium Heater
We read the reviews and the return reasons for every product selling here.
“Overheating”
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.
18 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 Small Aquarium Heater 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









