Aquarium Bacteria
FailThe top 5 brands take 100% of clicks, so Aquarium Bacteria is a Fail.
- Flapen Score
- 48 / 100Ranks 2,345 of 3,978 Pet Supplies niches · −3 vs the category median of 5148
- Market size
- $1.2M/yr449K searches / yr
- 90-day growth
- -8.5%search demand this quarter
- Competition
- 79%top-5 click share · 5 brands · 51 sellers
Flapen Score
Aquarium Bacteria against its category
The dotted line is the Pet Supplies average. Past it, Aquarium Bacteria is stronger. Inside it, weaker.
Market
The Aquarium Bacteria market on Amazon at a glance
Shoppers on Amazon United States searched for Aquarium Bacteria 449K times last year and spent an estimated $1.2M. All 5 brands take every click. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 15.8% of those searches ended in a purchase.
Shoppers searched for this 449K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 15.8% of those searches ended in a purchase. Searches in the last 90 days moved -8.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $1.2M a year.
- Searches, last 12 months
- 449K
- Growth, 90 days vs prior 90
- -8.5%
- Conversion, latest week
- 15.8%
- Market size, estimated
- $1.2Ma year
- Peak month
- January1.3× the quietest month
- Top search term
- seachem stability98K searches a year
02 · Price
A sale here is worth $16.93.
Listings sell for $16.93 on average, from $3.89 to $38.80. Amazon reports units sold in ranges. This niche sold 60K to 80K a year. The average listing sells 4,000 to 5,000 of them. At $16.93 that is $68K to $85K a year per listing.
- Average price
- $16.93inside the $15 to $100 sweet spot
- Price range
- $3.89–$38.80
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 60K–80K
- Units per listing a year
- 4,000–5,000
- Revenue per listing a year
- $68K–$85K
- Returns
- 0.7%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is reviews.
50% of listings pay for placement with sponsored ads. 93% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #105 within Fish & Aquatic Pets. It carries 4,610 reviews at 4.69 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 50%
- Prime listings
- 93%
- Out of stock, average day
- 0.0%
- Average rank
- #105in Fish & Aquatic Pets
- Average rating
- 4.69 starsAmazon United States average 4.42 stars
- Average reviews
- 4,610per listing
- Listings tracked
- 14
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 68 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 68 months
Products
Top Aquarium Bacteria 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
Seachem Stability - For Freshwater and Marine Aquariums 250ml
- Price
- $8.14
- Rating
- 4.8/5
- Reviews
- 6,090
- Age
- 24y ago

Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums 16.9 Fl Oz (Pack of 1)
- Price
- $17.08
- Rating
- 4.8/5
- Reviews
- 13,489
- Age
- 22y ago

API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 4-Ounce Bottle
- Price
- $8.49
- Rating
- 4.8/5
- Reviews
- 15,300
- Age
- 14y ago

API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 16-Ounce Bottle
- Price
- $16.79
- Rating
- 4.8/5
- Reviews
- 15,300
- Age
- 14y ago

Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (32-Ounce)
- Price
- $19.90
- Rating
- 4.6/5
- Reviews
- 3,390
- Age
- 14y ago
Trending
estimated 90-day click momentum
MICROBE-LIFT Nite-Out II Aquarium Bacteria for Start-up Instantly Cycle Aquariums Add Fish on Day 1 Rapid Ammonia and Nitrite Reducer for Freshwater & Saltwater Fish Tank 8 Ounces (NITEH08)
- Price
- $10.85
- Rating
- 4.5/5
- Reviews
- 1,833
- Age
- 17y ago

Seachem Stability - For Freshwater and Marine Aquariums 250ml
- Price
- $8.14
- Rating
- 4.8/5
- Reviews
- 6,090
- Age
- 24y ago

Brightwell Aquatics MicroBacter7 Biological Filter Bioculture Aid 500 ml
- Price
- $21.34
- Rating
- 4.7/5
- Reviews
- 3,479
- Age
- 22y ago

Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (32-Ounce | 2-Pack)
- Price
- $38.80
- Rating
- 4.7/5
- Reviews
- 495
- Age
- 8y ago

Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (32-Ounce)
- Price
- $19.90
- Rating
- 4.6/5
- Reviews
- 3,390
- Age
- 14y ago
Newest
by launch date
Seachem SureStart- 3 100 ml. Pack Aquarium Conditioning Pack for Freshwater & Marine.
- Price
- $16.00
- Rating
- 4.8/5
- Reviews
- 541
- Age
- 4y ago

Brightwell Aquatics MicroBacter Start XLF Freshwater Tank Starter 125 ml
- Price
- $10.77
- Rating
- 4.6/5
- Reviews
- 1,389
- Age
- 6y ago

Fritz Turbo Start 700 Freshwater (4 oz)
- Price
- $27.32
- Rating
- 4.6/5
- Reviews
- 758
- Age
- 6y ago

Fritz Aquatics FritzZyme 7 Live Nitrifying Bacteria Naturally Removes Amonia & Nitrite for Freshwater Fish (32-Ounce | 2-Pack)
- Price
- $38.80
- Rating
- 4.7/5
- Reviews
- 495
- Age
- 8y ago

API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 1-Ounce Bottle Blues & Purples
- Price
- $3.89
- Rating
- 4.4/5
- Reviews
- 1,160
- Age
- 13y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 79% of clicks. A locked shelf that new listings rarely crack.
Brands
5 flat
Sellers
51
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
79%
Top 20: 100%
Open market
0%
- Seachem53%
- API29%
- Fritz Aquatics11%
- MICROBE-LIFT4%
- Brightwell Aquatics4%
- Open — no brand owns it (0%)
Demand
Aquarium Bacteria search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.3×
Search terms
Top Aquarium Bacteria search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- seachem stability98K/yr
- stability fish tank stabilizer42K/yr
- fritz zyme 7 live bacteria freshwater30K/yr
- api quick start40K/yr
- quick start aquarium31K/yr
- quick start18K/yr
- aquarium bacteria22K/yr
- beneficial bacteria aquarium22K/yr
- stability22K/yr
- brightwell aquatics22K/yr
Reviews and returns
What reviews say buyers love and hate about Aquarium Bacteria
We read the reviews and the return reasons for every product selling here.
“Not worth the $ This is just water”
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.
20 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 Aquarium Bacteria 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









