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Aquarium Water Test Kits for New Fish

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API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 1 of 7
API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 2 of 7
API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 3 of 7
API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 4 of 7
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API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 100 count

Rated 4.5 out of 5 stars
136
$24.98 Chewy Price
($0.25/ea) Price per Unit
$34.98 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Salifert Aquarium Magnesium Test Kit

Rated 4.8 out of 5 stars
10
$16.67 Chewy Price
$19.61 List Price
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Free 1-3 day delivery on first-time orders over $35
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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
3
$18.13 Chewy Price
$18.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 1 of 9
Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 2 of 9
Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 3 of 9
Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 4 of 9
Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 5 of 9
Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 6 of 9
Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 7 of 9
Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 8 of 9
Aqueon 7-in-1 Aquarium Test Strips, 50 count slide 9 of 9

Aqueon 7-in-1 Aquarium Test Strips, 50 count

Rated 4.4 out of 5 stars
70
$16.07 Chewy Price
($0.33/ea) Price per Unit
$17.99 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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API Phosphate PO4 Freshwater & Saltwater Aquarium Test Kit, 150 count

Rated 4.7 out of 5 stars
22
$14.98 Chewy Price
($0.10/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

API Calcium Saltwater Aquarium Test Kit, 1 count

Rated 4.8 out of 5 stars
16
$13.97 Chewy Price
$19.78 List Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count

Rated 4.8 out of 5 stars
52
$13.98 Chewy Price
($0.16/ea) Price per Unit
$19.78 List Price
Autoship Price

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

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

Rated 4 out of 5 stars
10
$11.98 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

Tetra EasyStrips Complete Freshwater & Saltwater Aquarium Test Strips, 25 count

Rated 4.2 out of 5 stars
35
$9.99 Chewy Price
($0.40/ea) Price per Unit
$26.39 List Price
Autoship Price

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

Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count

Rated 4.6 out of 5 stars
163
$32.97 Chewy Price
($0.33/ea) Price per Unit
$39.99 List Price
Autoship Price

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

API Copper Cu+ Freshwater & Saltwater Aquarium Test Kit, 90 count

Rated 4 out of 5 stars
7
$12.48 Chewy Price
($0.14/ea) Price per Unit
$17.48 List Price
Autoship Price

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

API Pond Wide Range pH Test Kit 160-Test Pond Water Test Kit, 1 count

Rated 4.4 out of 5 stars
19
$9.48 Chewy Price
$13.48 List Price
Autoship Price

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

Salifert Aquarium Nitrite Test Kit

Rated 5 out of 5 stars
3
$12.74 Chewy Price
Autoship Price

Free 1-3 day delivery on first-time orders over $35
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ASF SeaTest KH Alkalinity Fish Aquarium Water Test Kit, 100 count

Rated 5 out of 5 stars
2
$16.06 Chewy Price
($0.17/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 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

Aqueon Ammonia Aquarium Test Strips, 50 count

Rated 4.5 out of 5 stars
11
$14.95 Chewy Price
($0.30/ea) Price per Unit
$17.99 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 4.8 out of 5 stars
4
$17.42 Chewy Price
$18.99 List Price
Autoship Price

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

API High Range pH Fresh & Salt Water Aquarium Test Kit, 160 count

Rated 4.8 out of 5 stars
11
$9.48 Chewy Price
($0.06/ea) Price per Unit
$13.28 List Price
Autoship Price

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

Salifert Aquarium pH Test Kit

Rated 5 out of 5 stars
1
$9.28 Chewy Price
$10.92 List Price
Autoship Price

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

Tetra EasyStrips Ammonia Freshwater & Saltwater Aquarium Test Strips, 100 count

Rated 4.8 out of 5 stars
34
$15.97 Chewy Price
($0.16/ea) Price per Unit
$33.49 List Price
Autoship Price

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

Milwaukee Instruments Digital Conductivity Pen EC Aquarium Water Test Kit

$34.50 Chewy Price
Autoship Price

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

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

Rated 4.4 out of 5 stars
14
$16.96 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

Salifert Aquarium Potassium Test Kit

Rated 4 out of 5 stars
5
$15.99 Chewy Price
$18.81 List Price
Autoship Price

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

Fluval Fresh pH Low Range Fish Water Test Kit

Rated 5 out of 5 stars
1
$13.99 Chewy Price
Autoship Price

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

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

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

Rated 4.6 out of 5 stars
25
$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
$10.53 Chewy Price
($0.11/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

Milwaukee Instruments Dissolved Oxygen Meter Aquarium Water Test Kit

Rated 5 out of 5 stars
1
$328.90 Chewy Price
Autoship Price

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

Salifert Aquarium Oxygen Test Kit

Rated 4.7 out of 5 stars
6
$14.89 Chewy Price
Autoship Price

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

Milwaukee Instruments Powder Reagents for Free Chlorine Photometer Aquarium Water Test Kit, 100...

$34.50 Chewy Price
($0.35/ea) Price per Unit
Autoship Price

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

API pH Freshwater & Saltwater Aquarium Test Strips, 25 count

Rated 4.4 out of 5 stars
10
$13.89 Chewy Price
($0.56/ea) Price per Unit
$18.28 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

API Freshwater Aquarium Master Test Kit, 800 count

Rated 4.7 out of 5 stars
390

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

Out of Stock

API Saltwater Aquarium Master Test Kit, 550 count

Rated 4.5 out of 5 stars
43

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

Out of Stock

API Ammonia Freshwater & Saltwater Aquarium Test Kit, 130 count

Rated 4.7 out of 5 stars
58

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

Out of Stock

API pH Freshwater Aquarium Test Kit, 250 count

Rated 4.7 out of 5 stars
83

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

Save 5% on repeat deliveries

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