---
title: "Phosphate Remover — £103K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/pet-supplies/phosphate-remover"
last_updated: "2026-07-31T11:21:04.506Z"
locale: en
meta:
description: "Niche score 53/100 · £103K/yr market · 75K searches/yr · £13.64 avg price. Soft demand (-15.2% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · £103K/yr market · 75K searches/yr · £13.64 avg price. Soft demand (-15.2% this quarter) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Phosphate Remover — £103K/yr Amazon UK Niche (2026) - Flapen"
---
# **phosphate remover**
**Worth a look**
Shows low returns (0.4%), but soft demand (-15.2% this quarter) keeps it on the watch list.
Market size 25Growth 17Conversion 87Competition 73Returns 98Price range 69Avg price 64Brand share 38Review moat 54Quality gap 37
**Returns**
**Incredible****0.4%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.0%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Good****41%**
top-5 click share — leaders hold, buyers still browse
**Price range**
**Good****£4.08–£38.83**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Avg price**
**Good****£13.64**
avg listing price — sweet spot $15–$100
**Review moat**
**Good****1,332**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Market size**
**Okay****£103K**
£103K/yr · 75K searches
**Growth**
**Bad****-15.2%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United Kingdom niche tracking, phosphate remover is a £103K/yr Amazon United Kingdom market (75K searches/yr). The top 5 brands hold 82% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 29, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **phosphate remover market data**
- **Units sold / yr**
- **5K–6K**
- avg 100–250/product
- **Revenue / yr**
- **£68K–£82K**
- units × avg price
- **Conversion rate**
- **10.0%**
- **Avg BSR**
- **#176**
- **Page quality**
- **0%**
- **Prime**
- **84%**
- **Sponsored**
- **61%**
- **Out of stock**
- **2.9%**
- **Avg brand age**
- **53 months**
- **Avg seller age**
- **184 days**
## **Competition & brand share**
The top 5 products take 41% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**11 **▲rising
**Sellers**
**68**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**41%**
Top 20: 89%
**Open market**
**13%**
- Fluval51% - TGC12% - ARKA7% - Supa7% - beaufan6% - Intralabs4% - Open — no brand owns it (5 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -15.2% search growth over the last 90 days.
2K2KSpike '25Prime Day '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/uk/pet-supplies/phosphate-remover/trend)
## **Top phosphate remover search terms**
- **activated carbon**24K/yr-16.4%4.5% conv. - **fluval 307 filter media**18K/yr-16.8%8.6% conv. - **carbon**9K/yr-6.3%1.2% conv. - **fluval 407 filter media**5K/yr-28.9%9.0% conv. - **fluval filter media**5K/yr-23.3%4.0% conv. - **activated carbon aquarium**5K/yr-22.3%8.9% conv. - **aquarium carbon**4K/yr-32.7%8.9% conv. - **activated carbon for ponds**4K/yr+248.6%4.9% conv. [**All search terms **](https://flapen.com/research/uk/pet-supplies/phosphate-remover/search-terms)
## **Top phosphate remover 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%4%£4K8%£8K12%£12K16%£16K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Fluval Carbon 800g complete with net bags**Fluval**£8.68**4.6★7,092 rev](https://www.amazon.co.uk/dp/B000HHSE8G) [2**ACTIVATED CARBON 1000g AQUARIUM FISH TANK 3D PRINTING EXTERNAL FILTER MEDIA/KOI FISH POND WATER DECHLORINATOR FILTERS 1KG Kilo**TGC**£9.94**4.5★106 rev](https://www.amazon.co.uk/dp/B0814SLNXV) [3**FLUVAL 307/407 Media Value Pack**Fluval**£38.83**4.7★712 rev](https://www.amazon.co.uk/dp/B08FYVRBSL) [4**Fluval 306/307 Filter Media Bio-Foam Value Pack**Fluval**£14.82**4.7★2,909 rev](https://www.amazon.co.uk/dp/B08FYSKW1F) [5**Fluval 306/7 and 406/7 Filter Water Polishing Pad**Fluval**£5.26**4.7★3,820 rev](https://www.amazon.co.uk/dp/B001D070N6)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**beaufan 38 Pack Aquarium Filter Media Kit Compatible with Fluval 406/407 Canister Filters Includes Replacement Bio-Foams Activated Carbon & Ceramic Rings (2 Sets Maintenance Bundle)**beaufan**£38.30**22 rev4mo ago](https://www.amazon.co.uk/dp/B0GSFN7GB9) [**beaufan 38 Pack Aquarium Filter Media Kit Compatible with Fluval 306/307 Canister Filters Includes Bio Foam Activated Carbon & Ceramic Rings (2 Sets Maintenance Bundle)**beaufan**£38.24**22 rev6mo ago](https://www.amazon.co.uk/dp/B0GKPJPMPM) [**36 Pcs Filter Media Kit for Fluval 306/307 Canister Filters Include Water Polishing Pad Bio-Foam Pad Ammonia/Phosphate/Nitrite Remover 500g BioMax Media 500g Carbon Silicone Lube Filter Mesh Bag**Tofcbye**£28.10**47 rev8mo ago](https://www.amazon.co.uk/dp/B0G28NT1KZ) [**3 KILO 3KG ACTIVATED CARBON AQUARIUM 4MM DIAMETER PELLETS FISH TANK EXTERNAL FILTER MEDIA/KOI FISH POND WATER DECHLORINATOR FILTERS 3000g**TGC**£20.65**13 rev8mo ago](https://www.amazon.co.uk/dp/B0G2RPP6FM) [**Kenmohuo Eco-Aquarium Water Purifier Cube 2025 Activated Carbon Filter Cube Super Strong Filtration for Aquarium Fish Tank Horse Trough & Ponds | Reusable Honeycomb Purifier Block | Odor Control**Kenmohuo**£11.89**6 rev1y ago](https://www.amazon.co.uk/dp/B0FFZ89G4R)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**beaufan 38 Pack Aquarium Filter Media Kit Compatible with Fluval 406/407 Canister Filters Includes Replacement Bio-Foams Activated Carbon & Ceramic Rings (2 Sets Maintenance Bundle)**beaufan**£38.30**4.6★**▲ 287%**](https://www.amazon.co.uk/dp/B0GSFN7GB9) [**3 KILO 3KG ACTIVATED CARBON AQUARIUM 4MM DIAMETER PELLETS FISH TANK EXTERNAL FILTER MEDIA/KOI FISH POND WATER DECHLORINATOR FILTERS 3000g**TGC**£20.65**4.8★**▲ 138%**](https://www.amazon.co.uk/dp/B0G2RPP6FM) [**beaufan 38 Pack Aquarium Filter Media Kit Compatible with Fluval 306/307 Canister Filters Includes Bio Foam Activated Carbon & Ceramic Rings (2 Sets Maintenance Bundle)**beaufan**£38.24**4.6★**▲ 135%**](https://www.amazon.co.uk/dp/B0GKPJPMPM) [**36 Pcs Filter Media Kit for Fluval 306/307 Canister Filters Include Water Polishing Pad Bio-Foam Pad Ammonia/Phosphate/Nitrite Remover 500g BioMax Media 500g Carbon Silicone Lube Filter Mesh Bag**Tofcbye**£28.10**4.3★**▲ 114%**](https://www.amazon.co.uk/dp/B0G28NT1KZ) [**FLUVAL U2 Filter Media Value Pack Brand Genuine Complete Internal Filter Kit**Fluval**£14.37**4.7★**▲ 100%**](https://www.amazon.co.uk/dp/B0D9YHSLWQ)
**~~View all trending →~~**
## **What buyers say about phosphate remover**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Value For Money**34%
*“Good value for money”*
**Quality-Overall**18%
*“Excellent product”*
**Advertised Vs Actual Product**11%
*“Perfect works as should”*
**Size-Overall**10%
*“Perfect fit”*
**Filtration**8%
*“Great product for your filter”*
**Ease Of Cleaning**5%
*“Keeps my tank looking clean for longer than others”*
**Carbon Footprint**2%
*“Its activated carbon”*
**Ease Of Use**2%
*“Easy to use”*
**Compatibility-Overall**2%
*“Work well with my filter”*
**Water Resistance**2%
*“Makes water clear”*
### **What buyers complain about **
**Size-Overall**25%
*“For some reason didn't fit my filter”*
**Value For Money**19%
*“expensive though”*
**Quality-Overall**6%
*“this waste if money the quality is shocking I found pieces of wood that was painted”*
**Taste-Overall**6%
*“you have charcoal flavour water”*
**Carbon Footprint**6%
*“Really, really dirty carbon”*
**Residue**6%
*“Contains a large amount of very fine particles that wash straight through a filter”*
**Filtration**6%
*“didnt have enough room in the filter for additional media”*
### **Top return reasons **
**Size-Overall**40%
**Compatibility-Overall**27%
**Filtration**7%
**Advertised Vs Actual Product**6%
**Functionality-Overall**5%
**Quality-Overall**4%
**Leak-Proof**2%
**Defective Material/Parts**2%
**Product Condition**2%
**Carbon Footprint**2%
## **Common questions**
- **Is phosphate remover profitable to sell on Amazon United Kingdom?**
- The niche generates £103K/yr across 31 tracked products. 2 of 5 products launched in the last 360 days are still selling. 90-day search growth is -15.2%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the phosphate remover niche?**
- 11 brands and 68 sellers compete. The top 5 products take 41% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in phosphate remover?**
- Top complaints mined from reviews: Size-Overall, Value For Money, Quality-Overall. The return rate is 0.4%.
- **When does demand for phosphate remover peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the phosphate remover niche?**
- Listings span £4.08–£38.83; the average listing price is £13.64 (sweet spot $15–$100). The average incumbent carries 1,332 reviews — the moat a new listing must climb.
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