purigen
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.4%return rate — above 6% kills the launch gate
Conversion
Incredible16.0%search→purchase rate — share of searches ending in a sale
Avg price
Great$20.07avg listing price — sweet spot $15–$100
Price range
Great$8.37–$47.04cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$488K$488K/yr · 152K searches
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Review moat
Bad5,347.33avg incumbent reviews — the moat a new listing must climb
Growth
Bad-15.4%90-day search growth — must beat 0% to launch
Competition
Bad95%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, purigen is a $488K/yr Amazon United States market (152K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan. Verdict: Skip it — 44/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
purigen market data
- Units sold / yr
- 25K–30K
- avg 3,000–4,000/product
- Revenue / yr
- $502K–$602K
- units × avg price
- Launch success
- —
- 1 of 1 new (360d)
- Conversion rate
- 16.0%
- Avg BSR
- #120
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 50%
- Out of stock
- 1.0%
- Avg brand age
- 63 months
- Avg seller age
- 170 days
Competition & brand share
The top 5 products capture 95% of clicks — a locked-up shelf that new listings rarely crack.Brands
3 falling
Sellers
44
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
95%
Top 20: 100%
Open market
0%
- Seachem87%
- RAINFLOW6%
- Jorewood6%
Demand & seasonality
Weekly Amazon search volume, last 68 weeks — -15.4% search growth over the last 90 days.Peak months: Jan · busiest ÷ quietest = 1.5×
Top purigen search terms
- purigen93K/yr
- purigen for aquarium57K/yr
- purigen packets for aquarium filter1K/yr
- purigen aquarium1K/yr
Top purigen 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 6 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Seachem Purigen 100 ml
Seachem$8.684.7★13,890 rev
Seachem Purigen Organic Filtration Resin - Fresh and Saltwater 500 ml (116016308)
Seachem$26.484.7★13,890 rev
Purigen & Matrix Bio Media 250ml
Seachem$14.774.7★3,647 rev
RAINFLOW Aquarium Resin - Organic Filtration Resin Remove Driftwood Tannins Aquarium Filter Media Bags for Aquarium Freshwater and Saltwater Fish Tank Trutle Pond (3)
RAINFLOW$8.374.2★199 rev
Jorewood Aquarium Filter Resin for Water Purification 3 Bags x 200ml Tannin Remover Odor Eliminator for Crystal Clear Water
Jorewood$15.074.6★99 rev
Newest
by launch dateJorewood Aquarium Filter Resin for Water Purification 3 Bags x 200ml Tannin Remover Odor Eliminator for Crystal Clear Water
Jorewood$15.0799 rev
RAINFLOW Aquarium Resin - Organic Filtration Resin Remove Driftwood Tannins Aquarium Filter Media Bags for Aquarium Freshwater and Saltwater Fish Tank Trutle Pond (3)
RAINFLOW$8.37199 rev
Seachem Purigen 100 ml
Seachem$8.6813,890 rev
Purigen & Matrix Bio Media 250ml
Seachem$14.773,647 rev
Seachem Purigen Organic Filtration Resin - Fresh and Saltwater 500 ml (116016308)
Seachem$26.4813,890 rev
Trending
90-day click momentumJorewood Aquarium Filter Resin for Water Purification 3 Bags x 200ml Tannin Remover Odor Eliminator for Crystal Clear Water
Jorewood$15.074.6★
Seachem Purigen Organic Filtration Resin - Fresh and Saltwater 500 ml (116016308)
Seachem$26.484.7★
RAINFLOW Aquarium Resin - Organic Filtration Resin Remove Driftwood Tannins Aquarium Filter Media Bags for Aquarium Freshwater and Saltwater Fish Tank Trutle Pond (3)
RAINFLOW$8.374.2★
Seachem Purigen 100 ml
Seachem$8.684.7★
Seachem Purigen Organic Filtration Resin - Fresh and Saltwater 1L (167)
Seachem$47.044.8★
What buyers say about purigen
What buyers praise and complain about, mined from review topics.What buyers love
“Great Value”
“Excellent Product”
“Product really does as work as advertised”
“My water is so clearer”
“Long-Term Filtration Support”
“its still cleaning my tank”
“Makes water super clear”
“Easy to use”
“In less than a full 24 hours, my aquariums were crystal clear! Cloudiness was gone. Highly recommend!”
“Great size”
What buyers complain about
“Leaking Bags”
“Didn't Work For My Fish Tank”
“And it had a bad smell too”
“heavily brown from tannins being released”
“Terrible quality bag”
“Be careful”
“Why pay more reasonably priced work's as well as high priced”
“Cloudy water problems”
“Too flimsy”
“it being dirty”
Top return reasons
Common questions
- Is purigen profitable to sell on Amazon United States?
- The niche generates $488K/yr across 6 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -15.4%. Flapen's verdict: Skip it (44/100).
- How competitive is the purigen niche?
- 3 brands and 44 sellers compete. The top 5 products take 95% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in purigen?
- Top complaints mined from reviews: Leak-Proof, Functionality-Overall, Smell. The return rate is 0.4%.
- When does demand for purigen peak?
- Demand peaks in Jan; the busiest month runs 1.5× the quietest.
- What does it cost to enter the purigen niche?
- Listings span $8.37–$47.04; the average listing price is $20.07 (sweet spot $15–$100). The average incumbent carries 5,347 reviews — the moat a new listing must climb.