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Aquarium Co2 System

Maybe

Products sell for $58.40 on average, inside the sweet spot. But demand is soft, at -17.7% this quarter, so Aquarium Co2 System is a Maybe.

Flapen Score
54
54 / 100
Top 34% of 3,978 Pet Supplies niches · +3 vs the category median of 51
Market size
$300K/yr284K searches / yr
90-day growth
-17.7%search demand this quarter
Competition
43%top-5 click share · 12 brands · 42 sellers

Flapen Score

Aquarium Co2 System against its category

The dotted line is the Pet Supplies average. Past it, Aquarium Co2 System is stronger. Inside it, weaker.

54Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Aquarium Co2 System market on Amazon at a glance

Shoppers on Amazon United States searched for Aquarium Co2 System 284K times last year and spent an estimated $300K. The top 5 brands take 84% of clicks. Flapen scores it 54 out of 100, a Maybe.

01 · Demand

An estimated 1.8% of those searches ended in a purchase.

Shoppers searched for this 284K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.8% of those searches ended in a purchase. Searches in the last 90 days moved -17.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $300K a year.

Searches, last 12 months
284K
Growth, 90 days vs prior 90
-17.7%
Conversion, latest week
1.8%
Market size, estimated
$300Ka year
Peak month
May1.5× the quietest month
Top search term
co2 for aquarium30K searches a year

02 · Price

A sale here is worth $58.40.

Listings sell for $58.40 on average, from $10.09 to $158.05. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 100 to 250 of them. At $58.40 that is $6K to $15K a year per listing.

Average price
$58.40inside the $15 to $100 sweet spot
Price range
$10.09–$158.05
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
5K–6K
Units per listing a year
100–250
Revenue per listing a year
$6K–$15K
Returns
1.4%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is low.

84% of listings pay for placement with sponsored ads. 97% ship with Prime. On an average day, 10.7% of listings are out of stock. The average listing ranks #213 within Fish & Aquatic Pets. It carries 707 reviews at 4.26 stars, so a new listing needs social proof before a better product.

Sponsored listings
84%
Prime listings
97%
Out of stock, average day
10.7%
Average rank
#213in Fish & Aquatic Pets
Average rating
4.26 starsAmazon United States average 4.42 stars
Average reviews
707per listing
Listings tracked
32

04 · Newcomers

7 of last year's 9 launches cleared the first-year sales bar.

9 products launched here in the last 12 months. 7 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 67 months on average, so the names here are established.

Launched, last 12 months
9
Successful launches
7Amazon's first-year sales bar
Average brand age
67 months

Products

Top Aquarium Co2 System products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Sign in to see the products

The products selling in this niche are for signed-in readers. Every market figure above stays open to everyone.

Competition

Competition: brands, sellers & click share

The top 5 products take 43% of clicks. Leaders hold, but buyers still shop past them.

Brands

12 falling

Sellers

42

Top-5 brand share

84%

Top 20: 100%

Top-5 click share

43%

Top 20: 89%

Open market

12%

  • Brand 129%
  • Brand 222%
  • Brand 316%
  • Brand 410%
  • Brand 56%
  • Brand 64%
  • Open — no brand owns it (6 brands, 12%)

Demand

Aquarium Co2 System search demand

Weekly searches over the year, seasonality beneath. Pick a range.

8K6KBlack Friday '25Spike '26SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.5×

Search terms

Top Aquarium Co2 System search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • co2 for aquarium30K/yr
  • aquarium co2 kit22K/yr
  • co2 aquarium kit27K/yr
  • aquarium co233K/yr
  • co2 generator21K/yr
  • co2 aquarium22K/yr
  • fzone co28K/yr
  • aquarium co2 system30K/yr
  • co2 kit for aquarium14K/yr
  • co2 system for aquarium16K/yr

Reviews and returns

What reviews say buyers love and hate about Aquarium Co2 System

We read the reviews and the return reasons for every product selling here.

24%of positive reviews mention “Quality-Overall”
18%of negative reviews mention “Leak-Proof”
1.4%of orders come back
“Leaking”
A buyer, on “Leak-Proof”18% of negative reviews mention the same topic

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

NegativePositive

FAQ

Common Aquarium Co2 System questions

Answered from the same tracked data.