Is c900 pool filter cartridge profitable to sell on Amazon United States?

The niche generates $103K/yr across 22 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is +88.3%. Flapen's verdict: Worth a look (63/100).

How competitive is the c900 pool filter cartridge niche?

19 brands and 31 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 67% of demand.

What do buyers complain about in c900 pool filter cartridge?

Top complaints mined from reviews: Filtration, Durability, Size-Overall. The return rate is 1.4%.

When does demand for c900 pool filter cartridge peak?

Demand peaks in Apr–May–Jun–Jul; the busiest month runs 3.5× the quietest.

What does it cost to enter the c900 pool filter cartridge niche?

Listings span $36.95–$109.44; the average listing price is $58.72 (sweet spot $15–$100). The average incumbent carries 365 reviews — the moat a new listing must climb.

c900 pool filter cartridge

Worth a look

Shows searches that convert (11.3% search→purchase), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.

Conversion

Great11.3%

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

Avg price

Great$58.72

avg listing price — sweet spot $15–$100

Returns

Great1.4%

return rate — above 5% kills the launch gate

Growth

Great+88.3%

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

Price range

Great$36.95–$109.44

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

Review moat

Great365.36

avg incumbent reviews — the moat a new listing must climb

Brand share

Good67%

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

Competition

Okay63%

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

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Market size

Okay$103K

$103K/yr · 16K searches

Signals Low Review Barrier High Price

According to Flapen's Amazon United States niche tracking, c900 pool filter cartridge is a $103K/yr Amazon United States market (16K searches/yr). The top 5 brands hold 67% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 63/100.

Data updated Jul 24, 2026 · scored weekly · How we score niches

c900 pool filter cartridge market data

Units sold / yr: 2K–3K; avg 0–100/product
Revenue / yr: $117K–$147K; units × avg price
Conversion rate: 11.3%
Avg BSR: #621
Page quality: 0%
Prime: 100%
Sponsored: 95%
Out of stock: 4.5%
Avg brand age: 35 months
Avg seller age: 175 days

Competition & brand share

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

Brands

19 falling

Sellers

Top-5 brand share

67%

Top 20: 100%

Top-5 click share

63%

Top 20: 99%

Open market

29%

Fil-fresh22%
Cryspool14%
Future Way12%
POOLPURE12%
TOREAD7%
Cielvita5%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +88.3% search growth over the last 90 days.

Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 3.5×

Open Trend

Top c900 pool filter cartridge search terms

c900 pool filter cartridge9K/yr +72.3%9.6% conv.
hayward c900 pool filter cartridge3K/yr +177.9%10.9% conv.
pa90 pool filter cartridge3K/yr +57.5%12.7% conv.

All search terms

Top c900 pool filter cartridge 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 22 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Fil-fresh C900 Pool Filter Cartridges Compatible with Hayward C900 Replacement for Pleatco PA90 Hayward CX900RE Unicel C-8409 90 sq.ft

Fil-fresh$47.404.4★61 rev

Future Way C900 Pool Filter Cartridge Replacement for Hayward C900 Replace Pleatco PA90 Hayward CX900RE Unicel C-8409 90 sq.ft

Future Way$54.204.6★970 rev

Cryspool 08046 Filter Compatible with Hayward C900 CX900RE C-900 PA90 Posi-Clear PXC-95 C-8409 Ultral-B6 PP-B6 FC-1292 90 Sq. Ft Pool Filter Cartridge 1 Pack

Cryspool$55.984.7★509 rev

POOLPURE PLF90A Pool Filter Replaces Hayward C900 CX900RE Pleatco PA90 Ultral-B6 Unicel C-8409 Filbur FC-1292 Sta-Rite PXC95 90 sq.ft L x OD: 17 3/8 x 8 15/16 (1 Pack)

POOLPURE$61.484.6★2,245 rev

TOREAD Replacement for Pool Filter PA90 CX900RE C900 Unicel C-8409 Filbur FC-1292 Posi-Clear Sta-Rite PXC95 Clearwater II ProClean 100 Aladdin 19002 25230-0095S 1 Pack

TOREAD$54.604.7★1,211 rev

Newest

by launch date

AmiBron C900 Pool Filter Cartridge Compatible with Hayward CX900RE PA90 C-8409 Ultra-B6 FC-1292 Posi-Clear PXC-95 L x OD: 17 3/8 x 8 15/16 90 sq.ft. 1Pack

AmiBron$43.3310 rev

6mo ago

USATURE C900 Pool Filter Cartridge Replacement for Hayward Star Clear Plus C900 CX900RE Pleatco PA90 Unicel C-8409 Filbur FC-1292 90 sq.ft Cartridge L x OD: 17-3/8 x 8-15/16

USATURE$49.5017 rev

6mo ago

Cielvita C900 4 oz Media Pool Filter Cartridge Replacement for Hayward StarClear Plus C900 C9002 for Hayward CX900RE for Pleatco PA90 for Unicel C-8409 for FC-1292 NSF/ANSI 50 Certified 90 sq.ft

Cielvita$46.7017 rev

7mo ago

Swimara Pro Series Pool Filter Cartridge 3oz Trilobal Fabric Replacement for Hayward CX900RE PA90 Unicel C-8409 Filbur FC-1292 Compatible with Star-Clear Plus C900 C751 90 Sq. Ft.

Swimara$47.01108 rev

10mo ago

Jumvogo 90 Sq. Ft. Pool Filter Cartridge Compatible with C900 CX900RE Clearwater II Pro Clean 100 C-8409 PA90 Ultral-B6 FC-1292 1 Pack

Jumvogo$43.5113 rev

1y ago

What buyers say about c900 pool filter cartridge

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

What buyers love

Value For Money23%

“A lot cheaper”

Filtration22%

“The filter works beautifully”

Size-Overall15%

“Exact fit”

Quality-Overall11%

“The build quality is impressive”

Advertised Vs Actual Product6%

“As advertised”

Ease Of Cleaning4%

“Cleans up nicely”

Durability3%

“seems very durable”

Assembly/Installation3%

“simple to install”

Material Quality2%

“The material feels durable and high quality, and it has held up really well with regular use”

Maintenance And Repair1%

“Great for regular maintenance”

What buyers complain about

Filtration28%

“WORST FILTER EVER”

Durability14%

“it came apart instantly”

Size-Overall7%

“It was two short”

Quality-Overall5%

“Bad quality”

Jamming/Clogging5%

“clogged pool filter for this one was a straightforward Saturday morning project that took me about fifteen minutes”

Pressure4%

“the pressure was low all the time”

Assembly/Installation2%

“I haven't even installed it”

Advertised Vs Actual Product2%

“Despite those positives, however, I am concerned about the products presentation”

Weight Heavy2%

“heavy after cleaned pool guy wanted to know if it was used”

Material Quality1%

“these are now made cheaper with material”

Top return reasons

Size-Overall60%

Filtration27%

Advertised Vs Actual Product5%

Value For Money2%

Defective Material/Parts1%

Functionality-Overall1%

Quality-Overall1%

Durability1%

Jamming/Clogging1%