- Flapen Score
- 26 / 100Ranks 3,919 of 3,978 Pet Supplies niches · −25 vs the category median of 5126
- Market size
- $59K/yr33K searches / yr
- 90-day growth
- -34.5%search demand this quarter
- Competition
- 83%top-5 click share · 5 brands · 11 sellers
Flapen Score
Rodi against its category
The dotted line is the Pet Supplies average. Past it, Rodi is stronger. Inside it, weaker.
Market
The Rodi market on Amazon at a glance
Shoppers on Amazon United States searched for Rodi 33K times last year and spent an estimated $59K. All 5 brands take every click. Demand peaks in Jan–Feb–Sep–Dec. Flapen scores it 26 out of 100, a Fail.
01 · Demand
An estimated 1.4% of those searches ended in a purchase.
Shoppers searched for this 33K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.4% of those searches ended in a purchase. Searches in the last 90 days moved -34.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $59K a year.
- Searches, last 12 months
- 33K
- Growth, 90 days vs prior 90
- -34.5%
- Conversion, latest week
- 1.4%
- Market size, estimated
- $59Ka year
- Peak month
- January3.5× the quietest month
- Top search term
- rodi filter18K searches a year
02 · Price
A sale here is worth $126.45.
Listings sell for $126.45 on average, from $46.91 to $219.86. Amazon reports units sold in ranges. This niche sold 750 to 1K a year. The average listing sells 100 to 250 of them. At $126.45 that is $13K to $32K a year per listing.
- Average price
- $126.45above the $15 to $100 sweet spot
- Price range
- $46.91–$219.86
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 750–1K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $13K–$32K
- Returns
- 4.1%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads.
100% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 6.6% of listings are out of stock. The average listing ranks #405 within Fish & Aquatic Pets. It carries 760 reviews at 4.32 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 100%
- Prime listings
- 100%
- Out of stock, average day
- 6.6%
- Average rank
- #405in Fish & Aquatic Pets
- Average rating
- 4.32 starsAmazon United States average 4.42 stars
- Average reviews
- 760per listing
- Listings tracked
- 11
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 77 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 77 months
Products
Top Rodi products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 17, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
Aquatic Life RO Buddie 4-Stage Aquarium Water Filter System Reverse Osmosis RO/DI Filtration Unit for Fish Tank Fountains and More 50 GPD (Gallons Per Day)
- Price
- $68.85
- Rating
- 4.5/5
- Reviews
- 5,036
- Age
- 21y ago

Aquatic Life Twist-in 4-Stage RO/DI Aquarium Water Filter System Reverse Osmosis Filtration with Sediment Carbon Membrane & DI Resin 75 GPD
- Price
- $97.47
- Rating
- 4.5/5
- Reviews
- 1,082
- Age
- 6y ago

Geekpure 4 Stage Portable Aquarium Reverse Osmosis RO Drinking Water Filtration System 100 GPD - with DI Filter TDS Close to 0 ppm
- Price
- $57.75
- Rating
- 4.2/5
- Reviews
- 562
- Age
- 6y ago

iSpring RCC1DP Tankless RO/DI System 5 Stage De-ionization Reverse Osmosis Water Filter High Performing 150 GPD Tankless RO Water System for Aquarium with DI Water Filter & Pump
- Price
- $219.86
- Rating
- 4.3/5
- Reviews
- 100
- Age
- 2y ago

Aquatic Life 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Unit with Carbon Plus Cartridge 100 GPD
- Price
- $151.98
- Rating
- 4.3/5
- Reviews
- 259
- Age
- 4y ago
Trending
estimated 90-day click momentum
4-Stage Aquarium Reverse Osmosis System with Flushing Valve Portable RO+DI deionized Water Filtration Colour Changing DI Filter 100 GPD-TDS Close to 0 ppm
- Price
- $60.64
- Rating
- 4.1/5
- Reviews
- 31
- Age
- 7mo ago

Max Water 6 Stage Aquarium System/RO Water Filtration System with Deionization Filter RO Water Purifier 100 GPD Hydroponics RODI System (Clear Housing System with TDS Meter)
- Price
- $187.53
- Rating
- 4.3/5
- Reviews
- 31
- Age
- 7y ago

Max Water 6 Stage Aquarium System/RO Water Filtration System with Deionization Filter RO Water Purifier 100 GPD Hydroponics RODI System (Clear)
- Price
- $173.78
- Rating
- 4.1/5
- Reviews
- 121
- Age
- 7y ago

Geekpure 3 STAGE Portable Aquarium Reverse Osmosis RO Drinking Water Filter System-100 GPD
- Price
- $46.91
- Rating
- 4.3/5
- Reviews
- 999
- Age
- 7y ago

iSpring RCC1D Tankless RO/DI System 5 Stage De-ionization Reverse Osmosis Water Filter System 150 GPD Tankless RO Water Filter System for Aquarium with DI Water Filter
- Price
- $170.45
- Rating
- 4.6/5
- Reviews
- 36
- Age
- 2y ago
Newest
by launch date
4-Stage Aquarium Reverse Osmosis System with Flushing Valve Portable RO+DI deionized Water Filtration Colour Changing DI Filter 100 GPD-TDS Close to 0 ppm
- Price
- $60.64
- Rating
- 4.1/5
- Reviews
- 31
- Age
- 7mo ago

iSpring RCC1DP Tankless RO/DI System 5 Stage De-ionization Reverse Osmosis Water Filter High Performing 150 GPD Tankless RO Water System for Aquarium with DI Water Filter & Pump
- Price
- $219.86
- Rating
- 4.3/5
- Reviews
- 100
- Age
- 2y ago

iSpring RCC1D Tankless RO/DI System 5 Stage De-ionization Reverse Osmosis Water Filter System 150 GPD Tankless RO Water Filter System for Aquarium with DI Water Filter
- Price
- $170.45
- Rating
- 4.6/5
- Reviews
- 36
- Age
- 2y ago

Aquatic Life 4-Stage Reverse Osmosis Deionization Water Filter System RO/DI Filtration Unit with Carbon Plus Cartridge 100 GPD
- Price
- $151.98
- Rating
- 4.3/5
- Reviews
- 259
- Age
- 4y ago

Geekpure 4 Stage Portable Aquarium Reverse Osmosis RO Drinking Water Filtration System 100 GPD - with DI Filter TDS Close to 0 ppm
- Price
- $57.75
- Rating
- 4.2/5
- Reviews
- 562
- Age
- 6y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 83% of clicks. A locked shelf that new listings rarely crack.
Brands
5 falling
Sellers
11
Est. top-5 brand share
100%
Top 20: 100%
Est. top-5 click share
83%
Top 20: 100%
Open market
0%
- Aquatic Life69%
- Geekpure10%
- iSpring9%
- Max Water8%
- Filterelated4%
- Open — no brand owns it (0%)
Demand
Rodi search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Feb, Sep, Dec · busiest ÷ quietest = 3.5×
Search terms
Top Rodi search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- rodi filter18K/yr
- ro di system for aquarium7K/yr
- ro/di water filter system for aquarium6K/yr
- rodi system for saltwater aquarium2K/yr
Reviews and returns
What reviews say buyers love and hate about Rodi
We read the reviews and the return reasons for every product selling here.
“Leaks like crazy”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
18 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Rodi questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









