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Phosphate Remover

Maybe

Returns run at only 0.4% of orders. But demand is soft, at -15.2% this quarter, so Phosphate Remover is a Maybe.

Flapen Score
53
53 / 100
Top 35% of 875 Pet Supplies niches · +3 vs the category median of 50
Market size
£103K/yr75K searches / yr
90-day growth
-15.2%search demand this quarter
Competition
41%top-5 click share · 11 brands · 68 sellers

Flapen Score

Phosphate Remover against its category

The dotted line is the Pet Supplies average. Past it, Phosphate Remover is stronger. Inside it, weaker.

53Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The Phosphate Remover market on Amazon at a glance

Shoppers on Amazon United Kingdom searched for Phosphate Remover 75K times last year and spent an estimated £103K. The top 5 brands take 82% of clicks. Flapen scores it 53 out of 100, a Maybe.

01 · Demand

10.0% of searches ended in a purchase last week.

Shoppers searched for this 75K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. In the latest week, 10.0% of those searches ended in a purchase. Searches in the last 90 days moved -15.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £103K a year.

Searches, last 12 months
75K
Growth, 90 days vs prior 90
-15.2%
Conversion, latest week
10.0%
Market size, estimated
£103Ka year
Peak month
January1.4× the quietest month
Top search term
activated carbon24K searches a year

02 · Price

A sale here is worth £13.64.

Listings sell for £13.64 on average, from £4.08 to £38.83. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 100 to 250 of them. At £13.64 that is £1K to £3K a year per listing.

Average price
£13.64under the $15 to $100 sweet spot
Price range
£4.08–£38.83
Amazon United Kingdom median price
£12.12across 27,606 niches
Units sold a year
5K–6K
Units per listing a year
100–250
Revenue per listing a year
£1K–£3K
Returns
0.4%of orders · Amazon United Kingdom median 0.6%

03 · Entry bar

The bar here is low.

61% of listings pay for placement with sponsored ads. 84% ship with Prime. On an average day, 2.9% of listings are out of stock. The average listing ranks #176 within Fish & Aquatic Pets. It carries 1,332 reviews at 4.53 stars, so a new listing needs social proof before a better product.

Sponsored listings
61%
Prime listings
84%
Out of stock, average day
2.9%
Average rank
#176in Fish & Aquatic Pets
Average rating
4.53 starsAmazon United Kingdom average 4.36 stars
Average reviews
1,332per listing
Listings tracked
31

04 · Newcomers

Amazon counts 2 of last year's 5 launches as successful.

5 products launched here in the last 12 months. Amazon counts 2 of them as successful launches, new products that hit its first-year sales bar. The brands on the shelf have sold for 53 months on average, so the names here are settling in.

Launched, last 12 months
5
Successful launches
2Amazon's first-year sales bar
Average brand age
53 months

Products

Top Phosphate Remover products & what they sell for

Every tracked product: its share of the shelf, its reviews, and its price.

Competition

Competition: brands, sellers & click share

The top 5 products take 41% of clicks. Leaders hold, but buyers still shop past them.

£0£4K£8K£12K£16K1101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

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

Phosphate Remover search demand

Weekly searches over the year, seasonality beneath. Pick a range.

2K2KSpike '25Prime Day '25SepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.4×

Search terms

Top Phosphate Remover search terms shoppers use

The exact words shoppers type, with yearly volume, growth, and conversion.

  • activated carbon24K/yr
  • fluval 307 filter media18K/yr
  • carbon9K/yr
  • fluval 407 filter media5K/yr
  • fluval filter media5K/yr
  • activated carbon aquarium5K/yr
  • aquarium carbon4K/yr
  • activated carbon for ponds4K/yr

Reviews and returns

What reviews say buyers love and hate about Phosphate Remover

What buyers praise, what they complain about and why they send it back, from the reviews.

Complain

Size-Overall25%−0.12

For some reason didn't fit my filter

Too big

I was expecting money bag sizes bag's not one big one

Value For Money19%+3.28

expensive though

Not cheap at £10

Quality-Overall6%+0.29

this waste if money the quality is shocking I found pieces of wood that was painted

Taste-Overall6%−0.03

you have charcoal flavour water

Carbon Footprint6%−0.01

Really, really dirty carbon

Love

Value For Money34%+3.28

Good value for money

Great value

Good price

Quality-Overall18%+0.29

Excellent product

Good quality

Reliable

Advertised Vs Actual Product11%+0.82

Perfect works as should

Just what I wanted

As described

Size-Overall10%−0.12

Perfect fit

Its a good sized amount in the tub

which is ideal for my tank size

Filtration8%+0.33

Great product for your filter

Biological filter

Perfect for external cylinder filters

Return

0.4% Return rate 47% Fixable by listing

Size-Overall40%▁▃▃█▆▆

For some reason didn't fit my filter

Too big

I was expecting money bag sizes bag's not one big one

Compatibility-Overall27%█▂▃▆▅▅
Filtration7%▁▁█▁▁▅

didnt have enough room in the filter for additional media

Advertised Vs Actual Product6%█▄▆▁▁▂
Functionality-Overall5%▁▇▁▁█▁

FAQ

Common Phosphate Remover questions

Answered from the same tracked data.