reef flux
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$32.25avg listing price — sweet spot $15–$100
Price range
Incredible$17.00–$50.44cheapest to priciest tracked listing — scored on the share inside $15–$100
Returns
Great1.2%return rate — above 6% kills the launch gate
Conversion
Great10.7%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Bad4,482avg incumbent reviews — the moat a new listing must climb
Growth
Bad-8.7%90-day search growth — must beat 0% to launch
Market size
Bad$52K$52K/yr · 15K searches
Competition
Bad97%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, reef flux is a $52K/yr Amazon United States market (15K searches/yr). The top 5 brands hold 100% of demand. Verdict: Skip it — 39/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
reef flux market data
- Units sold / yr
- 2K–3K
- avg 250–500/product
- Revenue / yr
- $65K–$81K
- units × avg price
- Launch success
- —
- 0 of 0 new (360d)
- Conversion rate
- 10.7%
- Avg BSR
- #117
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 71%
- Out of stock
- 0.0%
- Avg brand age
- 121 months
- Avg seller age
- 170 days
Competition & brand share
The top 5 products capture 97% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 rising
Sellers
18
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
97%
Top 20: 100%
Open market
0%
- rusepin56%
- Blue Life19%
- Generic17%
- REEF8%
Demand
Weekly Amazon search volume, last 11 weeks — -8.7% search growth over the last 90 days.Top reef flux 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 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
ReefHD Reef Flux Anti-Fungal Treatment (100 gal)
rusepin$17.004.2★1,137 rev
ReefHD Reeflux FIuconazole 200mg fungaI Fish lnfections lchthyophonus SaproIegnia KlLL Bryopsis Green Hair AIgae Aquarium Reef Flux AIgae Buster (Two Packs)
Generic$33.714.6★61 rev
Blue Life Reef Flux 7000MG
Blue Life$35.874.5★388 rev
Blue Life Flux Rx - 2000mg Treats up to 100Gal Reef Safe Use on Both Bryopsis and Green Hair Algae
Blue Life$24.764.4★309 rev
Reef Bliss Nights Womens Flip Flop Super Lightweight and Soft Footbed Thin Strap Beach Sandal Rose Gold 10
REEF$24.964.3★12,942 rev
Newest
by launch dateReefHD Reeflux FIuconazole 200mg fungaI Fish lnfections lchthyophonus SaproIegnia KlLL Bryopsis Green Hair AIgae Aquarium Reef Flux AIgae Buster (Two Packs)
Generic$33.7161 rev
ReefHD Reeflux FIuconazole 200mg fungaI Fish lnfections lchthyophonus SaproIegnia KlLL Bryopsis Green Hair AIgae Aquarium Reef Flux AIgae Buster (3 Packs)
Generic$50.4461 rev
Reef Sandy Womens Beach Flip Flop Soft Woven Strap Made From 100% Recycled PET Tan 6
REEF$39.0216,476 rev
Blue Life Reef Flux 7000MG
Blue Life$35.87388 rev
Blue Life Flux Rx - 2000mg Treats up to 100Gal Reef Safe Use on Both Bryopsis and Green Hair Algae
Blue Life$24.76309 rev
Trending
90-day click momentumReef Bliss Nights Womens Flip Flop Super Lightweight and Soft Footbed Thin Strap Beach Sandal Rose Gold 10
REEF$24.964.3★
Reef Sandy Womens Beach Flip Flop Soft Woven Strap Made From 100% Recycled PET Tan 6
REEF$39.024.5★
ReefHD Reeflux FIuconazole 200mg fungaI Fish lnfections lchthyophonus SaproIegnia KlLL Bryopsis Green Hair AIgae Aquarium Reef Flux AIgae Buster (Two Packs)
Generic$33.714.6★
Blue Life Reef Flux 7000MG
Blue Life$35.874.5★
Blue Life Flux Rx - 2000mg Treats up to 100Gal Reef Safe Use on Both Bryopsis and Green Hair Algae
Blue Life$24.764.4★
What buyers say about reef flux
What buyers praise and complain about, mined from review topics.What buyers love
“Nice product”
“I was getting algae pretty bad, and filters and pumps were running pretty strong to clean my nutrients without slowing it down”
“Like the title says this stuff just works”
What buyers complain about
“corals closing up”
“Did not work”
“Killed over $10k worth of coral”
“i read it may lower oxygen levels in the system so i had already increased oxygenation as much as possible and it was not working i aborted after 5-6 hours with a large water change and skimmer and UV on my fish are still acting strange”
“Caution - use of Amazon purchased Reef Flux led to major die off”
“Waste of my time and effort”
“used product”
“Killed everything in my tank even with air flow at the top to create aeration for the oxygen”
“Straps werent even that cute”
“Ran SO small - I am slightly smaller than a 10”
Top return reasons
Common questions
- Is reef flux profitable to sell on Amazon United States?
- The niche generates $52K/yr across 7 tracked products. 90-day search growth is -8.7%. Flapen's verdict: Skip it (39/100).
- How competitive is the reef flux niche?
- 4 brands and 18 sellers compete. The top 5 products take 97% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in reef flux?
- Top complaints mined from reviews: Contamination, Functionality-Overall, Value For Money. The return rate is 1.2%.
- What does it cost to enter the reef flux niche?
- Listings span $17.00–$50.44; the average listing price is $32.25 (sweet spot $15–$100). The average incumbent carries 4,482 reviews — the moat a new listing must climb.