marineland filter c
Skip itBrand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Avg price
Incredible$42.70avg listing price — sweet spot $15–$100
Conversion
Good6.8%search→purchase rate — share of searches ending in a sale
Returns
Good2.3%return rate — above 6% kills the launch gate
Market size
Good$423K$423K/yr · 146K searches
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Price range
Okay$8.94–$194.82cheapest to priciest tracked listing — scored on the share inside $15–$100
Competition
Okay64%top-5 click share — leaders hold, buyers still browse
Growth
Bad-5.4%90-day search growth — must beat 0% to launch
Review moat
Bad15,319.59avg incumbent reviews — the moat a new listing must climb
Brand share
Bad98%top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, marineland filter c is a $423K/yr Amazon United States market (146K searches/yr). The top 5 brands hold 98% of demand. Verdict: Skip it — 45/100.
Data updated Jul 17, 2026 · scored weekly · How we score niches
marineland filter c market data
- Units sold / yr
- 13K–15K
- avg 500–750/product
- Revenue / yr
- $534K–$641K
- units × avg price
- Launch success
- —
- 0 of 0 new (360d)
- Conversion rate
- 6.8%
- Avg BSR
- #133
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 41%
- Out of stock
- 0.0%
- Avg brand age
- 38 months
- Avg seller age
- 160 days
Competition & brand share
The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.Brands
7 rising
Sellers
33
Top-5 brand share
98%
Top 20: 100%
Top-5 click share
64%
Top 20: 98%
Open market
1%
- MarineLand75%
- Umlecoa13%
- Qwakay5%
- xbbwmrs3%
- pewyoke2%
- Trdzi1%
- Open — no brand owns it (1 brand, 1%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -5.4% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.9×
Top marineland filter c search terms
- marineland aquarium filter50K/yr
- marineland filter23K/yr
- marineland rite size c19K/yr
- marineland13K/yr
- rite size c filter cartridges12K/yr
- marineland penguin 3505K/yr
- bio wheel aquarium filter5K/yr
- marineland biowheel4K/yr
- marineland filters5K/yr
- marine land fish tank filters3K/yr
Top marineland filter c 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 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Marineland Bio-Wheel Penguin 200 GPH Power Aquarium Filter Ultra-Quiet Hang-On-Back Fish Tank Filter with Multi-Stage Filtration for Aquariums Up to 40 Gallons
MarineLand$37.914.3★41,200 rev
Marineland Bio-Wheel Penguin 350 GPH Power Aquarium Filter Ultra-Quiet Hang-On-Back Fish Tank Filter with Multi-Stage Filtration for Aquariums Up to 60 Gallons
MarineLand$43.624.3★41,200 rev
Marineland Penguin Bio-Wheel Replacement Filter Cartridges Rite-Size C 6 Count
MarineLand$18.664.7★28,924 rev
Umlecoa 8/16/32 Pack Rite-Size C Filter Cartridges Compatible with MarineLand Penguin PRO Power Filters 275/375 & Original Penguin Power Filters 200/350 - Rite-Size C Replacement Filter Cartridges
Umlecoa$19.374.6★2,262 rev
Marineland Bio-Wheel Penguin 375 GPH Power Aquarium Filter Ultra-Quiet Hang-On-Back Fish Tank Filter with Multi-Stage Filtration for Aquariums Up to 75 Gallons
MarineLand$61.524.3★41,200 rev
Newest
by launch date
Qwakay Aquarium Filter Replacement Cartridge - 10 Pack Rite Size C Fish Tank Cartridges Compatiable with Marineland Penguin PRO Power Filters 275/375 & Original Penguin Power Filters 200/350
Qwakay$16.84205 rev
16 Pack Rite Size C Aquarium Filter Cartridges Compatible with Marineland Penguin PRO Power Filters 275/375 & Original Penguin Power Filters 200/350 EZ Change #3 Replacement Filter Cartridges
ELCCOTYA$29.90121 rev
Trdzi Aquarium Fish Tank Filters Compatible with Marineland Penguin 350 200 Hang On Filters Replacement for Penguin BioWheel 350B 200B Assembly Biowheel Part PRBW2350B 2 Pack
Trdzi$14.17162 rev
MarineLand Rite Size Aquarium Filter Cartridge Bundles (Rite Size C 24pk)
MarineLand$59.9530 rev
pewyoke Aquarium Filter Cartridge 4 Pack Rite-Size C Filter Replacement Cartridges
pewyoke$8.94907 rev
Trending
90-day click momentumQwakay Aquarium Filter Replacement Cartridge - 10 Pack Rite Size C Fish Tank Cartridges Compatiable with Marineland Penguin PRO Power Filters 275/375 & Original Penguin Power Filters 200/350
Qwakay$16.844.6★
Marineland Bio-Wheel Penguin 100 GPH Power Aquarium Filter Ultra-Quiet Hang-On-Back Fish Tank Filter with Multi-Stage Filtration for Aquariums Up to 15 Gallons
MarineLand$26.214.3★
Aquarium Filter Cartridge 16 Pack Rite-Size C Filter Replacement Cartridges
pewyoke$26.474.7★
Marineland Bio-Wheel Penguin 375 GPH Power Aquarium Filter Ultra-Quiet Hang-On-Back Fish Tank Filter with Multi-Stage Filtration for Aquariums Up to 75 Gallons
MarineLand$61.524.3★
Marineland Bio-Wheel Penguin 200 GPH Power Aquarium Filter Ultra-Quiet Hang-On-Back Fish Tank Filter with Multi-Stage Filtration for Aquariums Up to 40 Gallons
MarineLand$37.914.3★
What buyers say about marineland filter c
What buyers praise and complain about, mined from review topics.What buyers love
“Filter works great”
“Cost effective”
“The product is top tier quality”
“Love the size”
“Keeps tank very clean”
“Just what I needed”
“Perfect high quality design”
“Durable”
“Very easy to use”
“Great flow and easy to set up so far no problems”
What buyers complain about
“Failed after 3 months”
“Worst filter you can buy”
“clearly quality issues”
“For how costly it is”
“small”
“It just quit working”
“needs cleaned every day”
“Splashes everywhere”
“Poor Quality/Defective”
“I hated that I had no control over the water flow”
Top return reasons
Common questions
- Is marineland filter c profitable to sell on Amazon United States?
- The niche generates $423K/yr across 22 tracked products. 90-day search growth is -5.4%. Flapen's verdict: Skip it (45/100).
- How competitive is the marineland filter c niche?
- 7 brands and 33 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 98% of demand.
- What do buyers complain about in marineland filter c?
- Top complaints mined from reviews: Durability, Filtration, Quality-Overall. The return rate is 2.3%.
- When does demand for marineland filter c peak?
- Demand is steady year-round — the busiest month runs 1.9× the quietest.
- What does it cost to enter the marineland filter c niche?
- Listings span $8.94–$194.82; the average listing price is $42.70 (sweet spot $15–$100). The average incumbent carries 15,320 reviews — the moat a new listing must climb.