Is filter sock profitable to sell on Amazon United States?

The niche generates $156K/yr across 38 tracked products. 2 of 5 products launched in the last 360 days are still selling. 90-day search growth is +14.7%. Flapen's verdict: Worth a look (62/100).

How competitive is the filter sock niche?

23 brands and 39 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 60% of demand.

What do buyers complain about in filter sock?

Top complaints mined from reviews: Size-Overall, Filtration, Quality-Overall. The return rate is 0.5%.

When does demand for filter sock peak?

Demand is steady year-round — the busiest month runs 1.5× the quietest.

What does it cost to enter the filter sock niche?

Listings span $4.79–$47.71; the average listing price is $20.55 (sweet spot $15–$100). The average incumbent carries 1,312 reviews — the moat a new listing must climb.

filter sock

Worth a look

Shows low returns (0.5%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Returns

Incredible0.5%

return rate — above 6% kills the launch gate

Avg price

Great$20.55

avg listing price — sweet spot $15–$100

Conversion

Great9.4%

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

Price range

Great$4.79–$47.71

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

Brand share

Good60%

top-5 brand share — brands hold most of the demand

Competition

Good46%

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

Review moat

Good1,311.92

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+14.7%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay$156K

$156K/yr · 81K searches

According to Flapen's Amazon United States niche tracking, filter sock is a $156K/yr Amazon United States market (81K searches/yr). The top 5 brands hold 60% of demand. Verdict: Worth a look — 62/100.

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

filter sock market data

Units sold / yr: 6K–8K; avg 100–250/product
Revenue / yr: $123K–$164K; units × avg price
Launch success: 40%; 2 of 5 new (360d)
Conversion rate: 9.4%
Avg BSR: #398
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 41 months
Avg seller age: 184 days

Competition & brand share

The top 5 products take 46% of clicks — established leaders, but buyers still shop beyond them.

Brands

23 falling

Sellers

Top-5 brand share

60%

Top 20: 98%

Top-5 click share

46%

Top 20: 82%

Open market

33%

Aquatic Experts16%
Coopache14%
XUANZIKEMAO12%
ROMIVO10%
AYWFEY8%
beaufan7%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +14.7% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.5×

Open Trend

Top filter sock search terms

filter sock28K/yr +27.6%6.0% conv.
filter socks16K/yr +104.3%12.5% conv.
filter socks for saltwater aquarium12K/yr -38.9%5.1% conv.
aquarium filter sock7K/yr -16.0%4.4% conv.
4 inch filter sock6K/yr -29.2%7.2% conv.
sock filter4K/yr +10.9%4.3% conv.
filter socks 4 inch4K/yr -18.3%6.6% conv.
4 filter sock4K/yr -21.7%9.5% conv.

All search terms

Top filter sock 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★)

All 38 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Coopache 30-Pack of Pool Skimmer Socks - Filters Baskets Skimmers Cleans Debris and Leaves for In-Ground and Above Ground Pools

Coopache$9.784.6★11,387 rev

XUANZIKEMAO 12 Pack 4 Inch Filter Sock 150 Micron Ring Honeycomb Filter Socks Filter Socks for Saltwater Aquarium Freshwater Aquarium Filter Bags Filter Bags for Fish Tank

XUANZIKEMAO$17.434.4★90 rev

ROMIVO 50 Pack Pool Filter Socks for Pool Skimmer Pool Skimmer Socks for Inground Pool Or Above Ground Pool Filter Ultra Fine Mesh Screen Liner Skimmer Basket Scum Sock Saver Debris Leaves Catcher

ROMIVO$11.614.6★3,499 rev

Aquatic Experts Felt Filter Socks 4 Inch Ring Style 200 Micron Aquarium Filter Sock for Sumps & Aquariums (4 x 14 2 Pack)

Aquatic Experts$17.514.6★2,466 rev

beaufan 20 Pack 4 Inch 150 Micron Honeycomb Filter Socks for Fish Tank Aquarium Filter Sock 3D Honeycomb Design Filter Sock Compatible with Waterbox Marine X 60.2 90.3 and 110.4.

beaufan$36.774.3★53 rev

Newest

by launch date

45 Pack Pool Filter Socks for Skimmer Baskets Reusable Pool Skimmer Socks for Above Ground or Inground Pools Filter Protecting Fine Mesh Screen Basket Sock for Collecting Leaves Branches Debris

HeatPure$10.4219 rev

3mo ago

Erthskda 12 Pack Filter Socks Reusable 4 Inch 3D Honeycomb Mesh Filter Bags for Aquarium Sump Saltwater and Freshwater Fish Tank Reef Tank White

Erthskda$19.673 rev

5mo ago

Oqqlin 6 Pcs 4 Filter Sock for Saltwater Aquarium 4 Inch Ring by 10 Inch Long Filter Socks 200 m Reusable Aquarium Filters Bags for Fish Tank Sump Freshwater Aquariums (White)

Oqqlin$14.682 rev

5mo ago

120 Pack Pool Filter Socks for Skimmer Baskets Reusable Pool Skimmer Socks for Above Ground or Inground Pools Filter Protecting Fine Mesh Screen Basket Sock for Collecting Leaves Branches Debris

HeatPure$24.3752 rev

7mo ago

MCCKLE Filter Sock 4 Inch Ring Filter Socks for Saltwater Aquarium by 9 Inch Long 200 Micron Aquarium Filter Sock for Fish Tank Sump Saltwater Freshwater Aquariums (12 Pack)

MCCKLE$32.7632 rev

11mo ago

What buyers say about filter sock

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

What buyers love

Filtration19%

“Great filter”

Value For Money15%

“Money saver”

Quality-Overall15%

“Excellent product”

Ease Of Cleaning10%

“Great for Keeping the Pool Cleaner”

Ease Of Use9%

“Easy to use”

Advertised Vs Actual Product9%

“As advertised”

Size-Overall7%

“Fit well”

Durability3%

“still usable”

Pest/Insect Control2%

“Great for small bugs in pool”

Material Quality1%

“The mesh material feels durable”

What buyers complain about

Size-Overall19%

“Very small”

Filtration12%

“These are NOT ultra fine filters”

Quality-Overall8%

“Inconsistent quality”

Durability6%

“Rips super easy”

Value For Money6%

“a bit cheaper”

Thickness4%

“They are not quite deep enough either”

Ease Of Cleaning3%

“that then go through my main filter resulting in me having to clean it more frequently”

Functionality-Overall3%

“do not function as one would expect”

Jamming/Clogging3%

“bugs that clog”

Contamination2%

“water chemistry chemical additions”

Top return reasons

Size-Overall60%

Filtration9%

Functionality-Overall8%

Advertised Vs Actual Product7%

Quality-Overall3%

Value For Money3%

Material Quality2%

Thickness1%

Thin1%

Defective Material/Parts1%

Common questions

Is filter sock profitable to sell on Amazon United States?: The niche generates $156K/yr across 38 tracked products. 2 of 5 products launched in the last 360 days are still selling. 90-day search growth is +14.7%. Flapen's verdict: Worth a look (62/100).
How competitive is the filter sock niche?: 23 brands and 39 sellers compete. The top 5 products take 46% of clicks and top 5 brands hold 60% of demand.
What do buyers complain about in filter sock?: Top complaints mined from reviews: Size-Overall, Filtration, Quality-Overall. The return rate is 0.5%.
When does demand for filter sock peak?: Demand is steady year-round — the busiest month runs 1.5× the quietest.
What does it cost to enter the filter sock niche?: Listings span $4.79–$47.71; the average listing price is $20.55 (sweet spot $15–$100). The average incumbent carries 1,312 reviews — the moat a new listing must climb.