Is aquarium test strips profitable to sell on Amazon United States?

The niche generates $2.7M/yr across 13 tracked products. 2 of 2 products launched in the last 360 days are still selling. 90-day search growth is +4.1%. Flapen's verdict: Worth a look (55/100).

How competitive is the aquarium test strips niche?

6 brands and 46 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 98% of demand.

What do buyers complain about in aquarium test strips?

Top complaints mined from reviews: Value For Money, Functionality-Overall, Color. The return rate is 0.6%.

When does demand for aquarium test strips peak?

Demand peaks in Aug; the busiest month runs 2.0× the quietest.

What does it cost to enter the aquarium test strips niche?

Listings span $6.78–$37.17; the average listing price is $20.53 (sweet spot $15–$100). The average incumbent carries 7,535 reviews — the moat a new listing must climb.

aquarium test strips

Worth a look

Shows low returns (0.6%), but brand-locked demand (top 5 brands take 98% of clicks) keeps it on the watch list.

Returns

Incredible0.6%

return rate — above 6% kills the launch gate

Market size

Incredible$2.7M

$2.7M/yr · 1.0M searches

Conversion

Incredible12.8%

search→purchase rate — share of searches ending in a sale

Avg price

Great$20.53

avg listing price — sweet spot $15–$100

Price range

Good$6.78–$37.17

cheapest to priciest tracked listing — scored on the share inside $15–$100

Quality gap

Okay4.5★

avg incumbent rating — lower means beatable quality

Growth

Okay+4.1%

90-day search growth — must beat 0% to launch

Review moat

Bad7,534.92

avg incumbent reviews — the moat a new listing must climb

Competition

Bad78%

top-5 click share — a locked-up shelf

Brand share

Bad98%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, aquarium test strips is a $2.7M/yr Amazon United States market (1.0M searches/yr). The top 5 brands hold 98% of demand. Demand peaks in Aug. Verdict: Worth a look — 55/100.

Data updated Jul 17, 2026 · scored weekly · How we score niches

aquarium test strips market data

Units sold / yr: 80K–100K; avg 8,000–10,000/product
Revenue / yr: $1.6M–$2.1M; units × avg price
Launch success: —; 2 of 2 new (360d)
Conversion rate: 12.8%
Avg BSR: #13
Page quality: 0%
Prime: 100%
Sponsored: 85%
Out of stock: 0.0%
Avg brand age: 59 months
Avg seller age: 155 days

Competition & brand share

The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.

Brands

6 falling

Sellers

Top-5 brand share

98%

Top 20: 100%

Top-5 click share

78%

Top 20: 100%

Open market

API45%
AAwipes31%
SJ WAVE15%
Pawfly5%
Droplytix3%
FUNSWTM2%

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +4.1% search growth over the last 90 days.

Peak months: Aug · busiest ÷ quietest = 2.0×

Open Trend

Top aquarium test strips search terms

api freshwater master test kit127K/yr +58.5%8.2% conv.
aquarium water test kit107K/yr -6.0%8.3% conv.
aquarium test strips115K/yr -13.8%8.9% conv.
aquarium test kit75K/yr -3.3%7.0% conv.
freshwater aquarium test kit31K/yr +79.7%7.1% conv.
fish tank test strips50K/yr -8.6%11.8% conv.
fish tank water testing kit49K/yr -10.6%10.3% conv.
fish tank test kit28K/yr -9.7%7.6% conv.
aquarium test kit freshwater32K/yr -17.4%6.4% conv.
water test kit for fish tank26K/yr -8.4%9.0% conv.

All search terms

Top aquarium test strips 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.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit White Single Multi-colored

API$32.184.8★31,296 rev

AAwipes 8-in-1 Aquarium Test Kit for Fish Tanks - Quick & Accurate Water Testing Strips for Aquariums & Ponds. Tests pH Ammonia Alkalinity Hardness Chlorine etc. (K02-50)

AAwipes$9.794.3★3,120 rev

SJ WAVE$21.114.5★5,054 rev

AAwipes Aquarium Ammonia Test Strips 8-in-1 |25 Strips | Quick & Accurate Water Testing Test pH Ammonia Alkalinity Hardness Chlorine Nitrite etc. (K02-25)

AAwipes$6.914.4★724 rev

API 5-in-1 Test Strips Freshwater and Saltwater Aquarium Test Strips 25-Count Box

API$12.634.6★15,512 rev

Newest

by launch date

DROPLYTIX Digital Aquarium Water Test Kit App-Enabled 10-in-1 Freshwater & Saltwater Aquarium Test Strips for Fish Tanks Shrimp Reef Test Strips pH Ammonia Nitrate Nitrite GH KH Chlorine

Droplytix$37.17416 rev

7mo ago

Pawfly 5 in 1 Aquarium Water Master Test Kit Aquarium Water Test Kit Fish Tank Water Testing Kit for pH Nitrite Nitrate Ammonia & Phosphate Aquarium Test Kit for Freshwater & Saltwater Fish Tanks

Pawfly$26.96142 rev

9mo ago

AAwipes Aquarium Ammonia Test Strips 8-in-1 |25 Strips | Quick & Accurate Water Testing Test pH Ammonia Alkalinity Hardness Chlorine Nitrite etc. (K02-25)

AAwipes$6.91724 rev

1y ago

SJ WAVE$21.115,054 rev

1y ago

AAwipes 8-in-1 Aquarium Test Kit for Fish Tanks - Quick & Accurate Water Testing Strips for Aquariums & Ponds. Tests pH Ammonia Alkalinity Hardness Chlorine etc. (K02-50)

AAwipes$9.793,120 rev

2y ago

What buyers say about aquarium test strips

What buyers praise and complain about, mined from review topics.

What buyers love

Ease Of Use41%

“Easy to read”

Value For Money11%

“Good value for money”

Quality-Overall10%

“Good kit”

Advertised Vs Actual Product9%

“Works as advertised”

Instructions/User Manual/Troubleshooting5%

“Easy to understand the instructions”

Water Resistance4%

“Water testing made easy”

Efficiency3%

“Fast acting”

Durability2%

“The case is durable”

Ease Of Cleaning1%

“They can dirty the water pretty quickly”

Color1%

“The colors are fairly easy to read”

What buyers complain about

Value For Money16%

“expensive as hell”

Functionality-Overall11%

“Does NOT detect Ammonia”

Color10%

“color gradations not easy to interpret”

Smell7%

“Smells absolutely disgusting”

Ease Of Use6%

“Hard to read”

Quality-Overall6%

“The test tubes that come with the kit are of very poor quality”

Durability5%

“break off after a few uses”

Advertised Vs Actual Product4%

“False advertisement”

Leak-Proof4%

“Arrived leaking”

Contamination4%

“It showed me that I have phosphates in my drinking water”

Top return reasons

Functionality-Overall32%

Advertised Vs Actual Product22%

Value For Money9%

Color6%

Defective Material/Parts5%

Certifications5%