Tunze Auto Top Off
FailDemand is soft, at -58.5% this quarter, so Tunze Auto Top Off is a Fail.
- Flapen Score
- 31 / 100Ranks 3,837 of 3,978 Pet Supplies niches · −20 vs the category median of 5131
- Market size
- $38K/yr7K searches / yr
- 90-day growth
- -58.5%search demand this quarter
- Competition
- 90%top-5 click share · 4 brands · 11 sellers
Flapen Score
Tunze Auto Top Off against its category
The dotted line is the Pet Supplies average. Past it, Tunze Auto Top Off is stronger. Inside it, weaker.
Market
The Tunze Auto Top Off market on Amazon at a glance
Shoppers on Amazon United States searched for Tunze Auto Top Off 7K times last year and spent an estimated $38K. All 4 brands take every click. Demand peaks in Jan–Feb. Flapen scores it 31 out of 100, a Fail.
01 · Demand
An estimated 5.5% of those searches ended in a purchase.
Shoppers searched for this 7K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 5.5% of those searches ended in a purchase. Searches in the last 90 days moved -58.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $38K a year.
- Searches, last 12 months
- 7K
- Growth, 90 days vs prior 90
- -58.5%
- Conversion, latest week
- 5.5%
- Market size, estimated
- $38Ka year
- Peak month
- February1.9× the quietest month
- Top search term
- tunze auto top off6K searches a year
02 · Price
A sale here is worth $98.06.
Listings sell for $98.06 on average, from $37.36 to $244.77. Amazon reports units sold in ranges. This niche sold 250 to 500 a year. The average listing sells 0 to 100 of them. At $98.06 that is $0 to $10K a year per listing.
- Average price
- $98.06inside the $15 to $100 sweet spot
- Price range
- $37.36–$244.77
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 250–500
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$10K
- Returns
- 3.5%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
57% of listings pay for placement with sponsored ads. 86% ship with Prime. On an average day, 8.5% of listings are out of stock. The average listing ranks #351 within Fish & Aquatic Pets. It carries 300 reviews at 4.20 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 57%
- Prime listings
- 86%
- Out of stock, average day
- 8.5%
- Average rank
- #351in Fish & Aquatic Pets
- Average rating
- 4.20 starsAmazon United States average 4.42 stars
- Average reviews
- 300per listing
- Listings tracked
- 7
04 · Newcomers
Brands here are young.
The brands on the shelf have sold for 34 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 34 months
Products
Top Tunze Auto Top Off 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
Tunze 3151 Osmolator 3 Nano
- Price
- $149.56
- Rating
- 3.7/5
- Reviews
- 17
- Age
- 1y ago

Osmolator 3
- Price
- $244.77
- Rating
- 4.3/5
- Reviews
- 35
- Age
- 2y ago

Tunze Replacement Metering Pump for Osmolator and Nano Osmolator 5000.020
- Price
- $37.36
- Rating
- 4.5/5
- Reviews
- 686
- Age
- 17y ago

Useek Auto Top Off for Saltwater Aquarium Water ATO System for Both Reef and Fresh Tank - Blue
- Price
- $39.93
- Rating
- 3.9/5
- Reviews
- 768
- Age
- 3y ago

Tunze Osmolator 3155 Water Level Controller Controlled Power Socket
- Price
- $99.64
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 6y ago
Trending
estimated 90-day click momentum
Osmolator 3
- Price
- $244.77
- Rating
- 4.3/5
- Reviews
- 35
- Age
- 2y ago

FZONE Aquarium ATO with Controller QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium
- Price
- $57.40
- Rating
- 4.0/5
- Reviews
- 415
- Age
- 3y ago

Tunze Osmolator 3155 Water Level Controller Controlled Power Socket
- Price
- $99.64
- Rating
- 5.0/5
- Reviews
- 2
- Age
- 6y ago

Tunze 3151 Osmolator 3 Nano
- Price
- $149.56
- Rating
- 3.7/5
- Reviews
- 17
- Age
- 1y ago

Useek Auto Top Off for Saltwater Aquarium Water ATO System for Both Reef and Fresh Tank - Blue
- Price
- $39.93
- Rating
- 3.9/5
- Reviews
- 768
- Age
- 3y ago
Newest
by launch date
MagTool Aquarium Auto Top Off System Upgraded Version Aquarium ATO with Dual Optical Sensor for Both Reef and Fresh Tanks(Duetto V2026)
- Price
- $57.74
- Rating
- 4.0/5
- Reviews
- 177
- Age
- 1y ago

Tunze 3151 Osmolator 3 Nano
- Price
- $149.56
- Rating
- 3.7/5
- Reviews
- 17
- Age
- 1y ago

Osmolator 3
- Price
- $244.77
- Rating
- 4.3/5
- Reviews
- 35
- Age
- 2y ago

FZONE Aquarium ATO with Controller QST2.0 Auto Top Off System for Saltwater Aquarium & Freshwater Aquarium
- Price
- $57.40
- Rating
- 4.0/5
- Reviews
- 415
- Age
- 3y ago

Useek Auto Top Off for Saltwater Aquarium Water ATO System for Both Reef and Fresh Tank - Blue
- Price
- $39.93
- Rating
- 3.9/5
- Reviews
- 768
- Age
- 3y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 90% of clicks. A locked shelf that new listings rarely crack.
Brands
4 falling
Sellers
11
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
90%
Top 20: 100%
Open market
0%
- Tunze83%
- Useek7%
- FZONE5%
- MagTool5%
Demand
Tunze Auto Top Off search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Feb · busiest ÷ quietest = 1.9×
Reviews and returns
What reviews say buyers love and hate about Tunze Auto Top Off
We read the reviews and the return reasons for every product selling here.
“Broke after a couple of months”
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 Tunze Auto Top Off 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









