---
title: "Marineland Filter C — $423K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/marineland-filter-c"
last_updated: "2026-07-21T19:36:05.142Z"
locale: en
meta:
description: "Niche score 45/100 · $423K/yr market · 146K searches/yr · $42.70 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $423K/yr market · 146K searches/yr · $42.70 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Marineland Filter C — $423K/yr Amazon US Niche (2026) - Flapen"
---
# **marineland filter c**
**Skip it**
Brand-locked demand (top 5 brands take 98% of clicks) — this niche doesn't clear our bar today.
Market size 56Growth 22Conversion 73Competition 36Returns 68Price range 46Avg price 95Brand share 6Review moat 19Quality gap 48
**Avg price**
**Incredible****$42.70**
avg listing price — sweet spot $15–$100
**Conversion**
**Good****6.8%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Good****2.3%**
return rate — above 6% kills the launch gate
**Market size**
**Good****$423K**
$423K/yr · 146K searches
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Price range**
**Okay****$8.94–$194.82**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Competition**
**Okay****64%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Bad****-5.4%**
90-day search growth — must beat 0% to launch
**Review moat**
**Bad****15,319.59**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Bad****98%**
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 ~~](https://flapen.com/research/methodology)
## **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.
4K3KHoliday '24Spike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/marineland-filter-c/trend)
## **Top marineland filter c search terms**
- **marineland aquarium filter**50K/yr-1.6%4.2% conv. - **marineland filter**23K/yr-18.5%3.4% conv. - **marineland rite size c**19K/yr-9.7%15.6% conv. - **marineland**13K/yr-4.8%1.8% conv. - **rite size c filter cartridges**12K/yr-1.4%14.0% conv. - **marineland penguin 350**5K/yr+135.9%5.1% conv. - **bio wheel aquarium filter**5K/yr-17.2%2.3% conv. - **marineland biowheel**4K/yr-29.4%3.5% conv. - **marineland filters**5K/yr-20.6%5.6% conv. - **marine land fish tank filters**3K/yr+7.8%3.2% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/marineland-filter-c/search-terms)
## **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.
0%5%$21K10%$42K15%$63K20%$85K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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**$37.91**4.3★41,200 rev](https://www.amazon.com/dp/B0009IODZG) [2**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**$43.62**4.3★41,200 rev](https://www.amazon.com/dp/B0009IMDQM) [3**Marineland Penguin Bio-Wheel Replacement Filter Cartridges Rite-Size C 6 Count**MarineLand**$18.66**4.7★28,924 rev](https://www.amazon.com/dp/B000256EKS) [4**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**$19.37**4.6★2,262 rev](https://www.amazon.com/dp/B0BCKBFQRZ) [5**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**$61.52**4.3★41,200 rev](https://www.amazon.com/dp/B07YXHX192)
**~~View all top sellers →~~**
### **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**$16.84**205 rev1y ago](https://www.amazon.com/dp/B0FF991QN5) [**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**$29.90**121 rev1y ago](https://www.amazon.com/dp/B0F2GJTCQ1) [**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**$14.17**162 rev1y ago](https://www.amazon.com/dp/B0DN1MM9P4) [**MarineLand Rite Size Aquarium Filter Cartridge Bundles (Rite Size C 24pk)**MarineLand**$59.95**30 rev2y ago](https://www.amazon.com/dp/B0D8MSPCPQ) [**pewyoke Aquarium Filter Cartridge 4 Pack Rite-Size C Filter Replacement Cartridges**pewyoke**$8.94**907 rev2y ago](https://www.amazon.com/dp/B0CP9FHQ5R)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**$16.84**4.6★**▲ 100%**](https://www.amazon.com/dp/B0FF991QN5) [**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**$26.21**4.3★**▲ 51%**](https://www.amazon.com/dp/B0007ZS230) [**Aquarium Filter Cartridge 16 Pack Rite-Size C Filter Replacement Cartridges**pewyoke**$26.47**4.7★**▲ 51%**](https://www.amazon.com/dp/B0CP9GQFRZ) [**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**$61.52**4.3★**▲ 46%**](https://www.amazon.com/dp/B07YXHX192) [**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**$37.91**4.3★**▲ 36%**](https://www.amazon.com/dp/B0009IODZG)
**~~View all trending →~~**
## **What buyers say about marineland filter c**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Filtration**28%
*“Filter works great”*
**Value For Money**21%
*“Cost effective”*
**Quality-Overall**13%
*“The product is top tier quality”*
**Size-Overall**10%
*“Love the size”*
**Ease Of Cleaning**4%
*“Keeps tank very clean”*
**Advertised Vs Actual Product**4%
*“Just what I needed”*
**Design-Overall**3%
*“Perfect high quality design”*
**Durability**2%
*“Durable”*
**Ease Of Use**1%
*“Very easy to use”*
**Spray/Flow**1%
*“Great flow and easy to set up so far no problems”*
### **What buyers complain about **
**Durability**25%
*“Failed after 3 months”*
**Filtration**19%
*“Worst filter you can buy”*
**Quality-Overall**6%
*“clearly quality issues”*
**Value For Money**6%
*“For how costly it is”*
**Size-Overall**5%
*“small”*
**Functionality-Overall**4%
*“It just quit working”*
**Ease Of Cleaning**3%
*“needs cleaned every day”*
**Leak-Proof**3%
*“Splashes everywhere”*
**Defective Material/Parts**2%
*“Poor Quality/Defective”*
**Water Flow**2%
*“I hated that I had no control over the water flow”*
### **Top return reasons **
**Size-Overall**47%
**Filtration**23%
**Functionality-Overall**7%
**Defective Material/Parts**4%
**Advertised Vs Actual Product**3%
**Value For Money**3%
**Product Condition**3%
**Durability**2%
**Compatibility-Overall**2%
**Leak-Proof**2%
## **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.
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