Crystal Clear Water Fish Tank Treatment
FailDemand is soft, at -54.2% this quarter, so Crystal Clear Water Fish Tank Treatment is a Fail.
- Flapen Score
- 44 / 100Ranks 630 of 875 Pet Supplies niches · −6 vs the category median of 5044
- Market size
- £58K/yr47K searches / yr
- 90-day growth
- -54.2%search demand this quarter
- Competition
- 54%top-5 click share · 11 brands · 59 sellers
Flapen Score
Crystal Clear Water Fish Tank Treatment against its category
The dotted line is the Pet Supplies average. Past it, Crystal Clear Water Fish Tank Treatment is stronger. Inside it, weaker.
Market
The Crystal Clear Water Fish Tank Treatment market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Crystal Clear Water Fish Tank Treatment 47K times last year and spent an estimated £58K. The top 5 brands take 78% of clicks. Flapen scores it 44 out of 100, a Fail.
01 · Demand
An estimated 15.0% of those searches ended in a purchase.
Shoppers searched for this 47K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 15.0% of those searches ended in a purchase. Searches in the last 90 days moved -54.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £58K a year.
- Searches, last 12 months
- 47K
- Growth, 90 days vs prior 90
- -54.2%
- Conversion, latest week
- 15.0%
- Market size, estimated
- £58Ka year
- Top search term
- tetra crystal water5K searches a year
02 · Price
A sale here is worth £8.14.
Listings sell for £8.14 on average, from £2.21 to £19.04. Amazon reports units sold in ranges. This niche sold 5K to 6K a year. The average listing sells 100 to 250 of them. At £8.14 that is £814 to £2K a year per listing.
- Average price
- £8.14under the $15 to $100 sweet spot
- Price range
- £2.21–£19.04
- 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
- £814–£2K
- Returns
- 0.1%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
83% of listings pay for placement with sponsored ads. 87% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #60 within Fish & Aquatic Pets. It carries 5,605 reviews at 4.34 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 83%
- Prime listings
- 87%
- Out of stock, average day
- 0.0%
- Average rank
- #60in Fish & Aquatic Pets
- Average rating
- 4.34 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 5,605per listing
- Listings tracked
- 23
04 · Newcomers
0 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 50 months on average, so the names here are settling in.
- Launched, last 12 months
- 1
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 50 months
Products
Top Crystal Clear Water Fish Tank Treatment 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.
Top sellers
by estimated 90-day click share
API ACCU-Clear Water Clarifier for Freshwater Aquariums 118 ml Bottle
- Price
- £5.92
- Rating
- 4.6/5
- Reviews
- 19,323
- Age
- 16y ago

Tetra Pond Crystal Water Effectively Clears Dirty Pond Water 500 ml
- Price
- £9.48
- Rating
- 4.2/5
- Reviews
- 4,275
- Age
- 16y ago

Water Clarifier Aquarium 118 ml - Aqua-Pure Liquid Filter Media
- Price
- £5.33
- Rating
- 4.4/5
- Reviews
- 2,133
- Age
- 8y ago

Interpet Quick Clear Aquarium Fish Tank Treatment 125 ml Rapidly Clears Cloudy Water Natural and Safe Ingredients for Freshwater Aquariums
- Price
- £3.62
- Rating
- 4.3/5
- Reviews
- 2,453
- Age
- 10y ago

API ACCU-Clear Water Clarifier for Freshwater Aquariums 237 ml Bottle
- Price
- £10.53
- Rating
- 4.6/5
- Reviews
- 19,323
- Age
- 15y ago
Trending
estimated 90-day click momentum
Tetra Pond Crystal Water Effectively Clears Dirty Pond Water 500 ml
- Price
- £9.48
- Rating
- 4.2/5
- Reviews
- 4,275
- Age
- 16y ago

35Pcs Powerful Aquarium Water Purification Tablets Fast-Acting Algae Remover and Tank Cleaner Water Treatment for Clear Fish Tank Water Eliminates Cloudiness and Impurities for Aquatic Environment
- Price
- £5.17
- Rating
- 3.3/5
- Reviews
- 12
- Age
- 6mo ago

Tetra FilterActive Bacteria- mix of live starter bacteria & sludge-reducing cleaning bacteria to support biological activity in aquarium extend cleaning intervals & improve filter performance 250ml
- Price
- £6.36
- Rating
- 4.6/5
- Reviews
- 11,880
- Age
- 11y ago

Water Clarifier Aquarium 118 ml - Aqua-Pure Liquid Filter Media
- Price
- £5.33
- Rating
- 4.4/5
- Reviews
- 2,133
- Age
- 8y ago

Tetra 231566 Pond Crystal Water 1 Litre
- Price
- £19.04
- Rating
- 4.3/5
- Reviews
- 854
- Age
- 13y ago
Newest
by launch date
35Pcs Powerful Aquarium Water Purification Tablets Fast-Acting Algae Remover and Tank Cleaner Water Treatment for Clear Fish Tank Water Eliminates Cloudiness and Impurities for Aquatic Environment
- Price
- £5.17
- Rating
- 3.3/5
- Reviews
- 12
- Age
- 6mo ago

Aqua Design CLEAR 500ml Aquarium Water Clarifier - Leaves Water Crystal Clear - Green & Cloudy Water Treatment - Treats 2 500L
- Price
- £9.23
- Rating
- 3.9/5
- Reviews
- 100
- Age
- 1y ago

Aqua Design CLEAR 2500ml Aquarium Water Clarifier - Leaves Water Crystal Clear - Green & Cloudy Water Treatment - Treats 12 500L
- Price
- £16.96
- Rating
- 3.9/5
- Reviews
- 123
- Age
- 1y ago

Algae Remover Aquarium 118 ml - Algaway Effective Against All Types
- Price
- £5.48
- Rating
- 4.1/5
- Reviews
- 1,687
- Age
- 3y ago

AquaCare Crystal Clear Tank and Aquarium Cloudy Water Treatment 120ml
- Price
- £8.40
- Rating
- 4.5/5
- Reviews
- 408
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 54% of clicks. Leaders hold, but buyers still shop past them.
Brands
11 rising
Sellers
59
Est. top-5 brand share
78%
Top 20: 100%
Est. top-5 click share
54%
Top 20: 97%
Open market
16%
- API25%
- Tetra23%
- ARKA15%
- Interpet9%
- AquaDesign7%
- Evolution Aqua6%
- Open — no brand owns it (5 brands, 16%)
Demand
Crystal Clear Water Fish Tank Treatment search demand
Weekly searches over the year. Pick a range.
Search terms
Top Crystal Clear Water Fish Tank Treatment search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- tetra crystal water5K/yr
- crystal clear water fish tank treatment7K/yr
- fish tank water cleaner5K/yr
- aquarium clear water4K/yr
- water clear for fish tank3K/yr
- clear water fish tank5K/yr
- accu clear2K/yr
- api accu clear2K/yr
- quick clear4K/yr
- water clarifier for fish tank3K/yr
Reviews and returns
What reviews say buyers love and hate about Crystal Clear Water Fish Tank Treatment
We read the reviews and the return reasons for every product selling here.
“Doesn't work well”
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.
20 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Crystal Clear Water Fish Tank Treatment 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









