Is aqueon replacement filter cartridges large profitable to sell on Amazon United States?

The niche generates $318K/yr across 22 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -4.8%. Flapen's verdict: Skip it (49/100).

How competitive is the aqueon replacement filter cartridges large niche?

8 brands and 73 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 95% of demand.

What do buyers complain about in aqueon replacement filter cartridges large?

Top complaints mined from reviews: Filtration, Quality-Overall, Size-Overall. The return rate is 0.8%.

When does demand for aqueon replacement filter cartridges large peak?

Demand is steady year-round — the busiest month runs 1.6× the quietest.

What does it cost to enter the aqueon replacement filter cartridges large niche?

Listings span $6.38–$41.65; the average listing price is $21.23 (sweet spot $15–$100). The average incumbent carries 6,284 reviews — the moat a new listing must climb.

aqueon replacement filter cartridges large

Skip it

Brand-locked demand (top 5 brands take 95% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.8%

return rate — above 6% kills the launch gate

Conversion

Incredible12.3%

search→purchase rate — share of searches ending in a sale

Avg price

Great$21.23

avg listing price — sweet spot $15–$100

Price range

Great$6.38–$41.65

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Good$318K

$318K/yr · 122K searches

Competition

Okay63%

top-5 click share — leaders hold, buyers still browse

Review moat

Bad6,283.95

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-4.8%

90-day search growth — must beat 0% to launch

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Brand share

Bad95%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, aqueon replacement filter cartridges large is a $318K/yr Amazon United States market (122K searches/yr). The top 5 brands hold 95% of demand. Verdict: Skip it — 49/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

aqueon replacement filter cartridges large market data

Units sold / yr: 15K–20K; avg 750–1,000/product
Revenue / yr: $318K–$425K; units × avg price
Launch success: 17%; 1 of 6 new (360d)
Conversion rate: 12.3%
Avg BSR: #245
Page quality: 0%
Prime: 100%
Sponsored: 77%
Out of stock: 10.7%
Avg brand age: 41 months
Avg seller age: 144 days

Competition & brand share

The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.

Brands

8 rising

Sellers

Top-5 brand share

95%

Top 20: 100%

Top-5 click share

63%

Top 20: 98%

Open market

Aqueon78%
Cunina8%
Tetra4%
Generic3%
SmtaqX2%
Switior2%
Open — no brand owns it (2 brands, 3%)

Demand & seasonality

Weekly Amazon search volume, last 67 weeks — -4.8% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.6×

Open Trend

Top aqueon replacement filter cartridges large search terms

aqueon replacement filter cartridges large77K/yr -10.4%11.0% conv.
aqueon filter large11K/yr +6.4%10.5% conv.
aqueon large filter cartridges7K/yr -8.2%12.6% conv.
large filters for aquarium5K/yr -8.9%8.5% conv.
aqueon filter cartridges6K/yr +24.6%8.4% conv.
aqueon filters4K/yr +4.1%5.7% conv.
aqueon replacement filter cartridges3K/yr +32.1%8.4% conv.
aqueon filter replacement3K/yr -11.1%5.2% conv.
large filter cartridges aquarium3K/yr +31.5%6.0% conv.
aqueon replacement filter3K/yr +17.0%5.1% conv.

All search terms

Top aqueon replacement filter cartridges large 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)3 products missing review or click data not plotted

All 22 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Aqueon Replacement Filter Cartridges Large - 12 pack

Aqueon$33.924.8★5,935 rev

Aqueon Aquarium Fish Tank Replacement Filter Cartridges Large - 3 pack

Aqueon$11.434.8★12,453 rev

Aqueon Replacement Filter Cartridges Large (6 pack) Ensure Even Distribution of Activated Carbon 25% More Activated Carbon Easy Installation

Aqueon$20.214.8★12,453 rev

Aqueon Replacement Filter Cartridges Medium - 6 pack

Aqueon$17.134.8★16,967 rev

Aqueon Filter Cartridge Small/6 Pk - Aquarium Filter Cartridge - 6 Count

Aqueon$16.764.8★2,050 rev

Newest

by launch date

16Pack Large Aquarium Filter Cartridges Replacement Compatible with Aqueon QuietFlow LED PRO Size 20 30 50 75 Power Filter Size 20 30 50 55/75 E Internal 40 Canister Extra 12Pcs Filter Pads.

Generic$32.930 rev

3w ago

Large Filter Cartridges Replacement Compatible with Aqueon QuietFlow Filter LED PRO Size 20 30 50 75/Power Filter Size 20 30 50 55/75 E Internal Size 40 and Canister Filter (8+6 Pack Filter Pads)

SmtaqX$22.080 rev

1mo ago

16 Pack Large Filter Cartridges +10 Pcs Ammonia Reducer Pads Compatible with Aqueon QuietFlow Power Filter Size 20 30 50 75 / E Internal Power Filter Size 40 and Canister Filter Size 200/300/400

SmtaqX$29.000 rev

2mo ago

Cunina 8+8 Pack Large Filters for Aquarium Compatible with Aqueon QuietFlow LED PRO Power Filter 20 30 50 75 Fit for Canister Models 200 300 400 Filter Cartridges & Filter Sponge for Aquarium

Cunina$20.3613 rev

2mo ago

8 Pack Large Aquarium Fish Tank Filter Cartridges with Filter Pad Compatible with Aqueon QuietFlow Filter LED PRO Size 20 30 50 75/Power Filter Size 20 30 50 55/75 E Internal Size 40 Canister Filter

Switior$20.9346 rev

3mo ago

What buyers say about aqueon replacement filter cartridges large

What buyers praise and complain about, mined from review topics.

What buyers love

Filtration24%

“Filters work great”

Size-Overall14%

“Fit as expected”

Quality-Overall13%

“No complaints at all”

Value For Money13%

“Good Value”

Advertised Vs Actual Product11%

“As advertised”

Ease Of Cleaning5%

“keep my aquariums clean”

Ease Of Use5%

“Easy to use”

Durability2%

“hold up well”

Spray/Flow1%

“Allows the water to flow through”

Pet Friendly1%

“Great product for my turtles”

What buyers complain about

Filtration18%

“Poor filter”

Quality-Overall11%

“Changed quality to cheap crap”

Size-Overall11%

“One is huge”

Durability9%

“so broke into two”

Value For Money6%

“offered slightly better value for the price”

Functionality-Overall6%

“Doesn't work”

Water Flow4%

“They do not adequately filter the water”

Thickness3%

“The filter is thin or lighter than others”

Carbon Footprint3%

“Feel like theres less carbon inside than most”

Assembly/Installation3%

“Assembly required”

Top return reasons

Size-Overall78%

Filtration10%

Compatibility-Overall3%

Advertised Vs Actual Product3%

Value For Money1%

Assembly/Installation1%

Functionality-Overall1%

Defective Material/Parts1%

Quality-Overall0%

Carbon Footprint0%

Common questions

Is aqueon replacement filter cartridges large profitable to sell on Amazon United States?: The niche generates $318K/yr across 22 tracked products. 1 of 6 products launched in the last 360 days are still selling. 90-day search growth is -4.8%. Flapen's verdict: Skip it (49/100).
How competitive is the aqueon replacement filter cartridges large niche?: 8 brands and 73 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 95% of demand.
What do buyers complain about in aqueon replacement filter cartridges large?: Top complaints mined from reviews: Filtration, Quality-Overall, Size-Overall. The return rate is 0.8%.
When does demand for aqueon replacement filter cartridges large peak?: Demand is steady year-round — the busiest month runs 1.6× the quietest.
What does it cost to enter the aqueon replacement filter cartridges large niche?: Listings span $6.38–$41.65; the average listing price is $21.23 (sweet spot $15–$100). The average incumbent carries 6,284 reviews — the moat a new listing must climb.