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Phosphate Remover

Maybe

An estimated 0.4% of orders come back. 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

An estimated 10.0% of those searches ended in a purchase.

Shoppers searched for this 75K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 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

2 of last year's 5 launches cleared the first-year sales bar.

5 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. 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

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 29, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 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

Est. top-5 brand share

82%

Top 20: 100%

Est. 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 estimated 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

We read the reviews and the return reasons for every product selling here.

34%of positive reviews mention “Value For Money”
25%of negative reviews mention “Size-Overall”
0.4%of orders come back
“For some reason didn't fit my filter”
A buyer, on “Size-Overall”25% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

16 topics

NegativePositive

FAQ

Common Phosphate Remover questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data