Aquarium & Fish Tank Water Test Kits

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Slide 1 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 1 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 2 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 3 of 8
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API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 8 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 1 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 2 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 3 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 4 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 5 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 6 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 7 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 8 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 1 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 2 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 3 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 4 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 5 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 6 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 7 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 8 of 8
Slide 1 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 1 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 2 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 3 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 4 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 5 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 6 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 7 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 8 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 1 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 2 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 3 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 4 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 5 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 6 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 7 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 8 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 1 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 2 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 3 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 4 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 5 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 6 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 7 of 8
API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count slide 8 of 8

API Nitrite NO2 Fresh & Salt Water Aquarium Test Kit, 180 count

Rated 5 out of 5 stars
6
$12.50 Chewy Price
($0.07/ea) Price per Unit
$16.78 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Slide 1 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 1 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 2 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 3 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 4 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 5 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 1 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 2 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 3 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 4 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 5 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 1 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 2 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 3 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 4 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 5 of 5
Slide 1 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 1 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 2 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 3 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 4 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 5 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 1 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 2 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 3 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 4 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 5 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 1 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 2 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 3 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 4 of 5
API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count slide 5 of 5

API Ammonia NH3/NH4 Freshwater & Saltwater Aquarium Test Strips, 25 count

Rated 4.3 out of 5 stars
13
$16.98 Chewy Price
($0.68/ea) Price per Unit
$23.98 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Slide 1 of 3
Fluval Phosphate Fish Water Test Kit slide 1 of 3
Fluval Phosphate Fish Water Test Kit slide 2 of 3
Fluval Phosphate Fish Water Test Kit slide 3 of 3
Fluval Phosphate Fish Water Test Kit slide 1 of 3
Fluval Phosphate Fish Water Test Kit slide 2 of 3
Fluval Phosphate Fish Water Test Kit slide 3 of 3
Fluval Phosphate Fish Water Test Kit slide 1 of 3
Fluval Phosphate Fish Water Test Kit slide 2 of 3
Fluval Phosphate Fish Water Test Kit slide 3 of 3

Fluval Phosphate Fish Water Test Kit

Rated 5 out of 5 stars
1
$18.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Slide 1 of 5
Fluval Mini Master Fish Water Test Kit slide 1 of 5
Fluval Mini Master Fish Water Test Kit slide 2 of 5
Fluval Mini Master Fish Water Test Kit slide 3 of 5
Fluval Mini Master Fish Water Test Kit slide 4 of 5
Fluval Mini Master Fish Water Test Kit slide 5 of 5
Fluval Mini Master Fish Water Test Kit slide 1 of 5
Fluval Mini Master Fish Water Test Kit slide 2 of 5
Fluval Mini Master Fish Water Test Kit slide 3 of 5
Fluval Mini Master Fish Water Test Kit slide 4 of 5
Fluval Mini Master Fish Water Test Kit slide 5 of 5
Fluval Mini Master Fish Water Test Kit slide 1 of 5
Fluval Mini Master Fish Water Test Kit slide 2 of 5
Fluval Mini Master Fish Water Test Kit slide 3 of 5
Fluval Mini Master Fish Water Test Kit slide 4 of 5
Fluval Mini Master Fish Water Test Kit slide 5 of 5

Fluval Mini Master Fish Water Test Kit

Rated 3.4 out of 5 stars
5
$49.89 Chewy Price
$50.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders
Free 365-day returns

ASF SeaTest NH3 Ammonia-Ammonium Fish Aquarium Water Test Kit, 40 count

Rated 1 out of 5 stars
1
$19.99 Chewy Price
($0.50/ea) Price per Unit
$23.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Lifegard All Purpose 6-Way Fish Pond Test Strip Kit, 25 count

Rated 1 out of 5 stars
1
$37.78 Chewy Price
($1.52/ea) Price per Unit
$47.72 List Price
Autoship Price

Free delivery on first-time orders
Free 365-day returns
Arrives between Apr 13 and Apr 17

Fritz Aquarium Water Nitrite Test Kit

Rated 3 out of 5 stars
1
$11.99 Chewy Price
$15.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Salifert Aquarium Potassium Test Kit

Rated 3.3 out of 5 stars
3
$17.84 Chewy Price
$18.81 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

ASF SeaTest Mg2+ Magnesium Fish Aquarium Water Test Kit, 40 count

$26.99 Chewy Price
($0.68/ea) Price per Unit
$31.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

API Pond 5-IN-1 Test Strips, 25 count

Rated 4.6 out of 5 stars
24
$14.98 Chewy Price
($0.60/ea) Price per Unit
$20.98 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

ASF SeaTest pH Fish Aquarium Water Test Kit, 100 count

Rated 5 out of 5 stars
1
$12.39 Chewy Price
($0.13/ea) Price per Unit
$20.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval Ammonia Fish Water Test Kit

Rated 4.7 out of 5 stars
3
$18.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

ASF SEATEST GH Total Hardness Fish Aquarium Water Test Kit, 40 count

$18.99 Chewy Price
($0.48/ea) Price per Unit
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

ASF SeaTest NO3- Nitrate Fish Aquarium Water Test Kit, 40 count

$20.29 Chewy Price
($0.51/ea) Price per Unit
$23.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

ASF SeaTest NO2- Nitrite Fish Aquarium Water Test Kit, 100 count

$14.09 Chewy Price
($0.15/ea) Price per Unit
$23.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval Nitrate Fish Water Test Kit

Rated 3.7 out of 5 stars
3
$22.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval Nitrite Fish Water Test Kit

Rated 5 out of 5 stars
1
$16.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Lifegard Fish Pond Ammonia Test Strips, 25 count

$26.27 Chewy Price
($1.06/ea) Price per Unit
$27.03 List Price
Autoship Price

Free delivery on first-time orders over $35
Free 365-day returns
Arrives between Apr 13 and Apr 17

Fluval Fresh & Salt pH High Range Fish Water Test Kit

Rated 4.5 out of 5 stars
2
$13.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

ASF SeaTest KH Alkalinity Fish Aquarium Water Test Kit, 100 count

Rated 5 out of 5 stars
1
$18.89 Chewy Price
($0.19/ea) Price per Unit
$18.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Fluval Fresh & Salt Calcium Fish Water Test Kit

$18.99 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

ASF SeaTest Ca2+ Calcium Fish Aquarium Water Test Kit, 40 count

Rated 3 out of 5 stars
1
$21.69 Chewy Price
($0.55/ea) Price per Unit
$27.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

ASF SeaTest PO4- Phosphate Fish Aquarium Water Test Kit, 40 count

$23.99 Chewy Price
($0.60/ea) Price per Unit
$27.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Out of Stock

Fritz Aquarium Water Master Test Kit

Rated 4 out of 5 stars
8

Free 1-3 day delivery on first-time orders
Free 365-day returns

Out of Stock

Fritz Aquarium Water Nitrate Test Kit

Rated 4.5 out of 5 stars
2

Free 1-3 day delivery on first-time orders over $35
Free 365-day returns

Save 5% on repeat deliveries

Water Test Type

Aquarium Type

Aquarium Concern

Brand

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Fish Type

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