turtle filter cartridges
Worth a lookShows searches that convert (12.9% search→purchase), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.
Conversion
Incredible12.9%search→purchase rate — share of searches ending in a sale
Returns
Great1.0%return rate — above 6% kills the launch gate
Avg price
Great$20.64avg listing price — sweet spot $15–$100
Price range
Great$6.37–$44.41cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Growth
Okay+7.7%90-day search growth — must beat 0% to launch
Market size
Okay$122K$122K/yr · 46K searches
Review moat
Okay3,870.62avg incumbent reviews — the moat a new listing must climb
Brand share
Bad96%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, turtle filter cartridges is a $122K/yr Amazon United States market (46K searches/yr). The top 5 brands hold 96% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
turtle filter cartridges market data
- Units sold / yr
- 5K–6K
- avg 100–250/product
- Revenue / yr
- $103K–$124K
- units × avg price
- Launch success
- —
- 0 of 2 new (360d)
- Conversion rate
- 12.9%
- Avg BSR
- #261
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 57%
- Out of stock
- 0.6%
- Avg brand age
- 49 months
- Avg seller age
- 141 days
Competition & brand share
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.Brands
8 falling
Sellers
39
Top-5 brand share
96%
Top 20: 100%
Top-5 click share
53%
Top 20: 99%
Open market
2%
- Tetra44%
- Zilla43%
- xbbwmrs4%
- Moonorange3%
- Esctabalt2%
- Nbbiww2%
- Open — no brand owns it (2 brands, 2%)
Top turtle filter cartridges search terms
- zilla turtle filter15K/yr
- reptofilter10K/yr
- turtle filter cartridges6K/yr
- zilla filter3K/yr
- repto filter for turtles6K/yr
- turtle tank filter cartridges3K/yr
- repto filter3K/yr
Top turtle filter cartridges 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.
All 21 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Tetra ReptoFilter Medium Filter Cartridges for Terrariums 3 Count Fits TetraFauna ReptoFilter 20 gal Viquarium and Decorative ReptoFilter
Tetra$7.614.7★12,060 rev
Tetra ReptoFilter Terrarium Filtration Keeps Water Clear
Tetra$17.404.3★3,067 rev
Zilla Replacement Filter Cartridges Medium 3 Count ( Pack of 1)
Zilla$6.974.7★2,772 rev
Zilla Reptile Pet Terrarium Water Filter Replacement Cartridge Large 3-Pack
Zilla$9.254.7★2,772 rev
Zilla Aquatic Pet Reptile Internal Water Filter For Up To 20 Gallons
Zilla$24.494.2★3,125 rev
Newest
by launch date
6 Pack Turtle Tank Large Filter Cartridges Compatible with Zilla Turtle Filter Cartridges for Aquarium Reptile Terrarium Filter Cartridge for Zilla for 40G and Large Basking Platform Filter 40G
Nbbiww$16.964 rev
Tetra Reptofilter Bundle | Reptofilter 90GPH Filter & 3pk Medium Reptofilter Cartridges
Tetra$28.343 rev
Esctabalt 16 Count Medium Filter Cartridges Compatible with Whisper Bio Bag Filters Large Aquarium Filter Cartridge for Whisper 10i/IQ10/PF10 and Repto Filter 90 GPH
Esctabalt$22.54244 rev
Moonorange 10 Pack Auqarium Filter Replacement Plates Turtle Tank Filter Sponges Suitable for 3.5W 280L/H Low-Water Filter
Moonorange$9.96529 rev
xbbwmrs 8 Count Medium Filter Cartridges Compatible with Tetra Whisper Bio-Bag Filters Medium Replacement Filter Cartridges for Whisper ReptoFilter and 10i IQ10 PF10 Power Filters -Ready to Use
xbbwmrs$19.95553 rev
Trending
90-day click momentum6 Pack Turtle Tank Large Filter Cartridges Compatible with Zilla Turtle Filter Cartridges for Aquarium Reptile Terrarium Filter Cartridge for Zilla for 40G and Large Basking Platform Filter 40G
Nbbiww$16.963.7★
JackSuper 4pcs Aquarium Waterfall Reptiles Turtle Filter Cartridges Replacement Waterfall Filter only Ultra-Activated Carbon with Whisper Technology (4pcs Filter Cartridges)
JackSuper$6.934.5★
Zilla Aquatic Pet Reptile Internal Water Filter For Up To 20 Gallons
Zilla$24.494.2★
Moonorange 10 Pack Auqarium Filter Replacement Plates Turtle Tank Filter Sponges Suitable for 3.5W 280L/H Low-Water Filter
Moonorange$9.964.6★
Zilla Replacement Filter Cartridges Medium 3 Count ( Pack of 1)
Zilla$6.974.7★
What buyers say about turtle filter cartridges
What buyers praise and complain about, mined from review topics.What buyers love
“Effective filters”
“Work as advertised”
“No complaints”
“Keep my tank clean”
“Good price”
“Perfect size”
“Easy to use”
“Durable”
“These filters are of natural fiber and compostable”
“Water does seem clearer”
What buyers complain about
“Worst filter”
“Stopped working after one day”
“Do not fit my tank”
“did not perform as well as I expected”
“Very disappointing quality”
“Doesn't clean water at all”
“Really disappointing especially because this is one of them are expensive filters”
“Doesnt fit my 4i”
“No carbon inside”
“Eco friendly cartridge is pointless if it has to be changed twice as often as the previous style”
Top return reasons
Common questions
- Is turtle filter cartridges profitable to sell on Amazon United States?
- The niche generates $122K/yr across 21 tracked products. 0 of 2 products launched in the last 360 days are still selling. 90-day search growth is +7.7%. Flapen's verdict: Worth a look (52/100).
- How competitive is the turtle filter cartridges niche?
- 8 brands and 39 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 96% of demand.
- What do buyers complain about in turtle filter cartridges?
- Top complaints mined from reviews: Filtration, Durability, Size-Overall. The return rate is 1.0%.
- What does it cost to enter the turtle filter cartridges niche?
- Listings span $6.37–$44.41; the average listing price is $20.64 (sweet spot $15–$100). The average incumbent carries 3,871 reviews — the moat a new listing must climb.