Is protein skimmer profitable to sell on Amazon United States?

The niche generates $276K/yr across 43 tracked products. 3 of 9 products launched in the last 360 days are still selling. 90-day search growth is -22.5%. Flapen's verdict: Worth a look (52/100).

How competitive is the protein skimmer niche?

27 brands and 57 sellers compete. The top 5 products take 40% of clicks and top 5 brands hold 50% of demand.

What do buyers complain about in protein skimmer?

Top complaints mined from reviews: Durability, Functionality-Overall, Quality-Overall. The return rate is 7.9% — above our launch gate.

When does demand for protein skimmer peak?

Demand is steady year-round — the busiest month runs 1.3× the quietest.

What does it cost to enter the protein skimmer niche?

Listings span $11.77–$297.15; the average listing price is $104.83 (sweet spot $15–$100). The average incumbent carries 207 reviews — the moat a new listing must climb.

protein skimmer

Worth a look

Shows beatable incumbent ratings (3.9★), but soft demand (-22.5% this quarter) keeps it on the watch list.

Quality gap

Incredible3.9★

avg incumbent rating — lower means beatable quality

Review moat

Great207.12

avg incumbent reviews — the moat a new listing must climb

Brand share

Great50%

top-5 brand share — no brand owns this niche

Competition

Great40%

top-5 click share — an open shelf

Avg price

Good$104.83

avg listing price — sweet spot $15–$100

Market size

Good$276K

$276K/yr · 199K searches

Price range

Okay$11.77–$297.15

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

Conversion

Bad1.3%

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

Returns

Bad7.9%

return rate — above 6% kills the launch gate

Growth

Bad-22.5%

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

According to Flapen's Amazon United States niche tracking, protein skimmer is a $276K/yr Amazon United States market (199K searches/yr). The top 5 brands hold 50% of demand. Verdict: Worth a look — 52/100.

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

protein skimmer market data

Units sold / yr: 2K–3K; avg 0–100/product
Revenue / yr: $210K–$262K; units × avg price
Launch success: 33%; 3 of 9 new (360d)
Conversion rate: 1.3%
Avg BSR: #463
Page quality: 0%
Prime: 98%
Sponsored: 72%
Out of stock: 15.4%
Avg brand age: 65 months
Avg seller age: 180 days

Competition & brand share

Clicks spread well past the top 5 (40% combined) — an open shelf where new products get seen.

Brands

27 flat

Sellers

Top-5 brand share

50%

Top 20: 95%

Top-5 click share

40%

Top 20: 78%

Open market

43%

IOAOI17%
AQQA11%
MagTool9%
Bubble Magus7%
Coralife6%
Aquatop6%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -22.5% search growth over the last 90 days.

No pronounced peak months · busiest ÷ quietest = 1.3×

Open Trend

Top protein skimmer search terms

protein skimmer77K/yr -22.5%0.9% conv.
protein skimmers for saltwater aquariums46K/yr -16.2%1.2% conv.
nano protein skimmer18K/yr -28.2%1.2% conv.
hang on back protein skimmer11K/yr -15.6%0.9% conv.
hob protein skimmer10K/yr -20.8%0.7% conv.
nano skimmer7K/yr -23.0%1.1% conv.
protein skimmer hang on back6K/yr -25.7%0.5% conv.
aquarium protein skimmer6K/yr -12.3%1.2% conv.
bubble magus protein skimmer5K/yr -26.2%1.3% conv.
mini protein skimmer4K/yr -21.5%0.8% conv.

All search terms

Top protein skimmer 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 43 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

AQQA Aquarium Protein Skimmer for Saltwater Fish Tank Nano Surface Skimmer Filter Pump 79GPH Ultra Quiet for 50-80 Gallon Tank

AQQA$35.143.4★68 rev

IOAOI Protein Skimmers for Saltwater Aquariums Hang On Protein Skimmer for Fish Tanks up to 80 Gallons DC Pinwheel Pump with Controller Not for Rimmed Tank

IOAOI$97.344.4★230 rev

Bubble Magus MiniQ Hang on Back Aquarium Filter Internal Hang on Back Canister Filter Nano Protein Skimmer Surface Skimmer Aquarium/Betta Pool Skimmer for coralife Fish Tank Saltwater Aquariums

Bubble Magus$77.433.9★47 rev

Protein Skimmer for 50-100 Gallon Saltwater Aquarium DC Pump with Adjustable Flow Control Ultra Silent Operation (35dB) Compact Nano-Scale Design for Reef Tank Saltwater Tank

NJSZBDZJ$130.824.7★8 rev

OASE CrystalSkim 350 Surface Skimmer for Freshwater and Marine Aquariums Compact Internal Filter for Film Oil and Debris Removal Quiet Adjustable Flow Shrimp-Safe for Tanks up to 92 Gal / 350 L

OASE$33.164.1★768 rev

Newest

by launch date

VEVOR Protein Skimmer for 30-80 Gal Saltwater Aquarium Hang On with DC Pump Protein Skimmer with DC Pinwheel Pump Adjustable Control for 30-80 Gal Medium Saltwater Aquariums & Reef Tank Fish Tank

VEVOR$70.420 rev

3w ago

MagTool Aquarium in-Sump DC Protein Skimmer with Controllable DC Pinwheel Pump for Up to 50-100 Gal Reef Tank (N100 Plus)

MagTool$162.1680 rev

4w ago

Seawater Aquarium Protein Skimmer Suitable for Aquariums of 80 gallons or Less Also Applicable to Saltwater Coral Tanks. Built-in wall-Mounted Type

LANDOUJIAO$37.390 rev

1mo ago

LANDOUJIAO Fish Tank Protein Skimmer Protein Skimmers for Saltwater Equipped with a DC Pump with Adjustable Flow Control Protein Skimmer the Maximum Capacity of the Aquarium can Reach 25 gallons.

LANDOUJIAO$40.770 rev

3mo ago

Hygger CO2 Aquarium Surface Skimmer 96 GPH Flow Rate Ideal for Freshwater & Saltwater Compatible 5W Efficient Waste Removal

Hygger CO2$25.4760 rev

4mo ago

What buyers say about protein skimmer

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

What buyers love

Value For Money16%

“Good for the money”

Quality-Overall16%

“The build quality also seems solid for the price”

Ease Of Cleaning10%

“Easy to clean”

Ease Of Use8%

“The collection cup is easy to remove”

Size-Overall6%

“I love the size”

Advertised Vs Actual Product4%

“Better than expected”

Design-Overall4%

“a well thought out design”

Filtration3%

“Incredible filter for the price”

Durability3%

“it runs well”

Strength2%

“Overall, powerful pump”

What buyers complain about

Durability22%

“Died after 1 week”

Functionality-Overall11%

“Never worked properly”

Quality-Overall8%

“Not high quality”

Size-Overall5%

“Small”

Instructions/User Manual/Troubleshooting4%

“The instructions are awful”

Value For Money4%

“too much hassle for this price point”

Ease Of Cleaning4%

“It wasnt evern cleaned”

Advertised Vs Actual Product3%

“FALSE ADVERTISEMENT”

Design-Overall3%

“so not very good design”

Water Flow3%

“While I was at work today, the pump motor failed and shifted out”

Top return reasons

Size-Overall33%

Functionality-Overall23%

Defective Material/Parts10%

Advertised Vs Actual Product6%

Product Condition5%

Compatibility-Overall4%

Leak-Proof4%