carbon filter for aquarium
Worth a lookShows a sweet-spot price point ($32.29 avg), but soft demand (-21.0% this quarter) keeps it on the watch list.
Avg price
Incredible$32.29avg listing price — sweet spot $15–$100
Returns
Great1.5%return rate — above 6% kills the launch gate
Competition
Great38%top-5 click share — an open shelf
Review moat
Good902.4avg incumbent reviews — the moat a new listing must climb
Conversion
Good5.2%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.5★avg incumbent rating — lower means beatable quality
Price range
Okay$6.39–$211.38cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay81%top-5 brand share — brands hold most of the demand
Market size
Okay$105K$105K/yr · 63K searches
Growth
Bad-21.0%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, carbon filter for aquarium is a $105K/yr Amazon United States market (63K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Jan–Feb–Mar–Nov–Dec. Verdict: Worth a look — 51/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
carbon filter for aquarium market data
- Units sold / yr
- 4K–5K
- avg 100–250/product
- Revenue / yr
- $129K–$161K
- units × avg price
- Launch success
- 22%
- 4 of 18 new (360d)
- Conversion rate
- 5.2%
- Avg BSR
- #556
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 71%
- Out of stock
- 0.0%
- Avg brand age
- 26 months
- Avg seller age
- 164 days
Competition & brand share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.Brands
17 rising
Sellers
59
Top-5 brand share
81%
Top 20: 100%
Top-5 click share
38%
Top 20: 79%
Open market
16%
- Fluval62%
- IFERLA8%
- beaufan4%
- Aolleteau4%
- LWPLWA3%
- Magluv3%
- Open — no brand owns it (11 brands, 16%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -21.0% search growth over the last 90 days.Peak months: Jan, Feb, Mar, Nov, Dec · busiest ÷ quietest = 2.9×
Top carbon filter for aquarium search terms
- fluval 407 replacement parts20K/yr
- fluval 307 replacement parts13K/yr
- fluval replacement parts8K/yr
- fluval 407 parts7K/yr
- fluval 306 replacement parts6K/yr
- fluval 307 parts5K/yr
- fluval parts4K/yr
Top carbon filter for aquarium 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 42 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Fluval A20061 X06 AquaStop Valve
Fluval$21.404.7★2,978 rev
Fluval Intake/Outlet Kit for 307/407 Filters (A446 A449)
Fluval$40.254.2★101 rev
Fluval 407 Motor Head Maintenance Kit for Canister Filter
Fluval$28.384.5★310 rev
Intake/Output Replacement Kit for 307/407 Canister Filters (A446 A449)
Fluval$42.244.6★162 rev
Fluval 307 Motor Head Maintenance Kit for Canister Filter
Fluval$26.754.5★268 rev
Newest
by launch date
46-Pack Aquarium Maintenance Media Kits Replacement for Fluval 306/307 Performance Canister Filter Includes Nitrite-Absorbing Filter Pad/Phosphate-Absorbing Filter Pad/Ammonia-Absorbing Pad
Aolleteau$52.947 rev
A20015 Ribbed Hose Replacement for Fluval 307 407 306 406 305 405 Canister Filter Hose for Fluval Aquarium Filter Tubing Replacement Parts 9.8Ft
Zelvaron$16.615 rev
LWPLWA A20126 Primer Assembly with Cover for Fluval 07 Series Filter for Fluval 107 207 307 407 Canister Filter Replacement Parts
LWPLWA$15.4510 rev
XwaYexa A20015 Ribbed Hosing 9.8Ft Replacement Hose Aquarium Filter Tubing for Fluval 304/305/306/307 and 404/405/406/407 Canister Filters
XwaYexa$16.3410 rev
PROUDSCREW 30 Pack Replacement Filter Media Kit Compatible with Fluval 306/307 Aquarium Filters Including Bio Ceramic Rings Activated Carbon Blue White & Black Bio Foam Value Pack
PROUDSCREW$40.226 rev
Trending
90-day click momentum46-Pack Aquarium Maintenance Media Kits Replacement for Fluval 306/307 Performance Canister Filter Includes Nitrite-Absorbing Filter Pad/Phosphate-Absorbing Filter Pad/Ammonia-Absorbing Pad
Aolleteau$52.945.0★
A20015 Ribbed Hose Replacement for Fluval 307 407 306 406 305 405 Canister Filter Hose for Fluval Aquarium Filter Tubing Replacement Parts 9.8Ft
Zelvaron$16.613.4★
LWPLWA A20126 Primer Assembly with Cover for Fluval 07 Series Filter for Fluval 107 207 307 407 Canister Filter Replacement Parts
LWPLWA$15.452.8★
2 Pack Rim Connector Replacement for Fluval Fx4/Fx5/Fx6 Parts High Performance Canister Filter Accessories Hose Fitting Rim Connector and Clips Bracket Adapter Parts for Aquarium Fish Tank Filters
IFERLA$22.304.4★
JZSMY Impeller Replacement for Fluval 307 Canister Filter Premium Magnetic Rotor Spare Part High Efficiency Water Flow Durable Aquarium Filter Repair Accessory Precise Fit & Long Lasting
JZSMY$18.535.0★
What buyers say about carbon filter for aquarium
What buyers praise and complain about, mined from review topics.What buyers love
“Fits perfectly”
“Great filter”
“Worth every Penny”
“Quality product does exactly as advertised”
“As advertised”
“do not leak”
“Works for the 407”
“The spray bar works pretty well”
“Easy to use”
“easy to rinse”
What buyers complain about
“The quality of this brand-new filter was so poor”
“Leaked immediately”
“they've seen a recent quality decline”
“They break easily”
“Sold me a used item”
“Really cheap product especially for a ridiculous price”
“does not fit model stated”
“they are dirty”
“Not compatible with the canister as advertised”
“Does not work”
Top return reasons
Common questions
- Is carbon filter for aquarium profitable to sell on Amazon United States?
- The niche generates $105K/yr across 42 tracked products. 4 of 18 products launched in the last 360 days are still selling. 90-day search growth is -21.0%. Flapen's verdict: Worth a look (51/100).
- How competitive is the carbon filter for aquarium niche?
- 17 brands and 59 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 81% of demand.
- What do buyers complain about in carbon filter for aquarium?
- Top complaints mined from reviews: Filtration, Leak-Proof, Quality-Overall. The return rate is 1.5%.
- When does demand for carbon filter for aquarium peak?
- Demand peaks in Jan–Feb–Mar–Nov–Dec; the busiest month runs 2.9× the quietest.
- What does it cost to enter the carbon filter for aquarium niche?
- Listings span $6.39–$211.38; the average listing price is $32.29 (sweet spot $15–$100). The average incumbent carries 902 reviews — the moat a new listing must climb.