dolphin pool cleaner filters
Worth a lookShows demand growing +218.0% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+218.0%90-day search growth — must beat 0% to launch
Avg price
Incredible$32.84avg listing price — sweet spot $15–$100
Price range
Incredible$18.07–$99.74cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Great412.84avg incumbent reviews — the moat a new listing must climb
Conversion
Great7.2%search→purchase rate — share of searches ending in a sale
Returns
Good2.5%return rate — above 5% kills the launch gate
Brand share
Good70%top-5 brand share — brands hold most of the demand
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Market size
Bad$42K$42K/yr · 18K searches
According to Flapen's Amazon United States niche tracking, dolphin pool cleaner filters is a $42K/yr Amazon United States market (18K searches/yr). The top 5 brands hold 70% of demand. Demand peaks in Apr–May–Jun–Jul. Verdict: Worth a look — 57/100.
Data updated Jul 24, 2026 · scored weekly · How we score niches
dolphin pool cleaner filters market data
- Units sold / yr
- 1K–2K
- avg 0–100/product
- Revenue / yr
- $41K–$49K
- units × avg price
- Conversion rate
- 7.2%
- Avg BSR
- #347
- Page quality
- 0%
- Prime
- 89%
- Sponsored
- 84%
- Out of stock
- 2.7%
- Avg brand age
- 32 months
- Avg seller age
- 162 days
Competition & brand share
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.Brands
16 rising
Sellers
23
Top-5 brand share
70%
Top 20: 100%
Top-5 click share
64%
Top 20: 100%
Open market
24%
- SUNRRA27%
- Fil-fresh17%
- Future Way10%
- ULTICOR8%
- Dolphin8%
- TUOWS6%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +218.0% search growth over the last 90 days.Peak months: Apr, May, Jun, Jul · busiest ÷ quietest = 10.1×
Top dolphin pool cleaner filters search terms
- dolphin pool cleaner filters7K/yr
- dolphin nautilus cc plus filters5K/yr
- dolphin ultra fine filter4K/yr
- dolphin nautilus cc ultra fine filter2K/yr
Top dolphin pool cleaner filters 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 19 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
SUNRRA Ultra Fine Filters Compatible with Dolphin Nautilus CC Plus (Not for Nautilus CC) Nautilus CC Supreme M200/M400/M500 Part # 9991432-R4 Pleated Pool Cleaner Replacement Part 4 Packs
SUNRRA$21.974.7★451 rev
Fil-fresh Robotic Pool Cleaner Filters Replaces for Dolphin M400/M500 & Nautilus CC Plus Ultra Fine Cartridge Filter Panels Part Number 9991432-R4 Pack of 4
Fil-fresh$23.124.7★550 rev
Future Way 4 Pack Ultra Fine Cartridge Filter Panels Compatible with Dolphin Nautilus CC Plus and M400/M500 Robotic Pool Cleaner Filters Replace #9991432-R4
Future Way$21.954.7★596 rev
Ulticor Ultra Fine Filter Basket Compatible with Dolphin Robotic Pool Cleaners S50 S100 Active 10 & 15 Echo T15 T25 Proteus DX3 Saturn Cayman Escape Nautilus CC Encore E10 Explorer E20 Solo Advantage
ULTICOR$37.554.5★735 rev
TUOWS for Dolphin Filters 9991432-R4 4 Packs Replacement Pool Filter Compatible with Dolphin M400/M500 Nautilus CC Plus Robotic Pool Cleaner
TUOWS$18.544.9★25 rev
Newest
by launch dateTUOWS for Dolphin Filters 9991432-R4 4 Packs Replacement Pool Filter Compatible with Dolphin M400/M500 Nautilus CC Plus Robotic Pool Cleaner
TUOWS$18.5425 rev
LBLVBNEWD Ultra Fine Filter Panels Replacement Spring Filter Cartridges Compatible with Dolphin Nautilus CC Plus M500 M400 M200 Robotic Pool Cleaners Part # 9991432-R4 9991433-R4 8 Packs
LBLVBNEWD$27.0417 rev
Ultra-Fine Filter Basket Compatible with Dolphin Pool Cleaner-Dolphin E10 Dolphin Nautilus CC Proteus DX3 Explorer E20 S50 S100 Active 10 & 15 Echo T15 T25 Saturn Cayman Escape Part# 9991460-R1
SUNRRA$39.8918 rev
Ultra-Fine Filter Basket Part No. 9991460-R1 for Dolphin Robotic Pool Cleaners | Compatible with S50 S100 Active 10/15 DX3 E10/E20 | Fits Nautilus Explorer Series | 50 Micron Mesh for Fine Debris
Doule King$32.8833 rev
Replace Part#9991467-R4 Ultra-Fine Filter Panels Compatible with Dolphin Robotic Pool Cleaners Pleated Cartridge Filter Replacement for Dolphin S200 Proteus DX4 Active 20 Active 30 S300i M600
Henkgo$23.35109 rev
Trending
90-day click momentumTUOWS for Dolphin Filters 9991432-R4 4 Packs Replacement Pool Filter Compatible with Dolphin M400/M500 Nautilus CC Plus Robotic Pool Cleaner
TUOWS$18.544.9★
Replace Part#9991467-R4 Ultra-Fine Filter Panels Compatible with Dolphin Robotic Pool Cleaners Pleated Cartridge Filter Replacement for Dolphin S200 Proteus DX4 Active 20 Active 30 S300i M600
Henkgo$23.354.6★
Funmit Ultra Fine Cartridge Filter Replacement for Dolphin Nautilus CC Plus M200 / M400 / M500 Robotic Pool Cleaner Parts Replaces Part # 9991432-R4 4 Pack
Funmit$25.184.7★
PUREBURG Ultra-Fine Filter Panels Compatible with Dolphin M200 M400 M500 and Nautilus CC Plus Robotic Pool Cleaner Replaces Part 9991432-R4 Pack of 8
PUREBURG$26.194.8★
Ulticor Ultra Fine Filter Basket Compatible with Dolphin Robotic Pool Cleaners S50 S100 Active 10 & 15 Echo T15 T25 Proteus DX3 Saturn Cayman Escape Nautilus CC Encore E10 Explorer E20 Solo Advantage
ULTICOR$37.554.5★
What buyers say about dolphin pool cleaner filters
What buyers praise and complain about, mined from review topics.What buyers love
“Fit and worked as expected”
“Good filter”
“Initially, the basket looked like high quality”
“Great value”
“Very easy to clean”
“Works as advertised”
“Works perfect for the last 6 months”
“easy to install”
“So much easier to use”
“storing out of the sun extends the life”
What buyers complain about
“This doesn't work to catch debris does not fit right Nautilus cc waste of time and money”
“As others have mentioned the 1st filter is warped”
“broke when removing the basket”
“Not good quality it fell apart with in the 4 weeks”
“I didnt realize how poorly it was cleaning before I replace the filters”
“All contents dump all over/in your unit”
“The replacement from the manufacturer was too expensive so I opted for this basket as it was reasonably priced”
“To get them in we had to do the SIDES FIRST otherwise it wouldnt work”
“Really cheap material”
Top return reasons
Common questions
- Is dolphin pool cleaner filters profitable to sell on Amazon United States?
- The niche generates $42K/yr across 19 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +218.0%. Flapen's verdict: Worth a look (57/100).
- How competitive is the dolphin pool cleaner filters niche?
- 16 brands and 23 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 70% of demand.
- What do buyers complain about in dolphin pool cleaner filters?
- Top complaints mined from reviews: Size-Overall, Filtration, Durability. The return rate is 2.5%.
- When does demand for dolphin pool cleaner filters peak?
- Demand peaks in Apr–May–Jun–Jul; the busiest month runs 10.1× the quietest.
- What does it cost to enter the dolphin pool cleaner filters niche?
- Listings span $18.07–$99.74; the average listing price is $32.84 (sweet spot $15–$100). The average incumbent carries 413 reviews — the moat a new listing must climb.