Aquarium Water Test Kits for New Fish

Sort
Filter

Salifert Aquarium pH Test Kit

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

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

Slide 1 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 1 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 2 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 3 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 4 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 5 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 6 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 7 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 8 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 1 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 2 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 3 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 4 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 5 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 6 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 7 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 8 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 1 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 2 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 3 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 4 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 5 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 6 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 7 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 8 of 8
Slide 1 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 1 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 2 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 3 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 4 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 5 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 6 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 7 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 8 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 1 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 2 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 3 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 4 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 5 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 6 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 7 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 8 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 1 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 2 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 3 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 4 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 5 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 6 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 7 of 8
API Freshwater Aquarium Master Test Kit, 800 count slide 8 of 8

API Freshwater Aquarium Master Test Kit, 800 count

Rated 4.7 out of 5 stars
357
$25.75 Chewy Price
($0.04/ea) Price per Unit
$50.48 List Price
Autoship Price

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

Slide 1 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 1 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 2 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 3 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 4 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 5 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 1 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 2 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 3 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 4 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 5 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 1 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 2 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 3 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 4 of 5
Tetra EasyStrips 6-in-1 Freshwater & Saltwater Aquarium Test Strips, 100 count slide 5 of 5

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

Rated 4.6 out of 5 stars
152
$13.83 Chewy Price
($0.14/ea) Price per Unit
$37.49 List Price
Autoship Price

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

Slide 1 of 9
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 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 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
62
$9.34 Chewy Price
($0.19/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

Salifert Aquarium Phosphate Test Kit

Rated 5 out of 5 stars
5
$18.95 Chewy Price
$19.61 List Price
Autoship Price

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

SunGrow Refractometer for Saltwater Aquarium & Reef Tank, Koi Pond Water Salinity Meter Tester

Rated 4.3 out of 5 stars
38
$15.45 Chewy Price
$16.99 List Price
Autoship Price

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

Salifert Aquarium Ammonia Test Kit

Rated 4.1 out of 5 stars
8
$13.99 Chewy Price
Autoship Price

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

API Saltwater Aquarium Master Test Kit, 550 count

Rated 4.6 out of 5 stars
41
$35.98 Chewy Price
($0.07/ea) Price per Unit
$50.48 List Price
Autoship Price

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

API GH & KH General & Carbonate Hardness Freshwater Aquarium Test Kit

Rated 4.8 out of 5 stars
82
$11.98 Chewy Price
$16.78 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
2
$12.99 Chewy Price
Autoship Price

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

Salifert Aquarium Nitrate Test Kit

Rated 4.8 out of 5 stars
6
$17.12 Chewy Price
$17.37 List Price
Autoship Price

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

Salifert Aquarium Carbonate Hardness/Alkalinity Test Kit

Rated 4.3 out of 5 stars
11
$16.46 Chewy Price
Autoship Price

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

API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 100 count

Rated 4.5 out of 5 stars
130
$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
Free 365-day returns

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

Rated 4.8 out of 5 stars
32
$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

Salifert Aquarium Magnesium Test Kit

Rated 4.8 out of 5 stars
6
$19.61 Chewy Price
Autoship Price

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

API pH Freshwater Aquarium Test & Adjuster Kit, 250 count

Rated 4.6 out of 5 stars
38
$8.98 Chewy Price
($0.04/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

Aqueon Ammonia Aquarium Test Strips, 50 count

Rated 4.5 out of 5 stars
11
$13.19 Chewy Price
($0.27/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

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

Rated 4.3 out of 5 stars
18
$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

API Reef Aquarium Master Test Kit, 1 count

Rated 4.8 out of 5 stars
25
$34.98 Chewy Price
$50.48 List Price
Autoship Price

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

API Phosphate PO4 Freshwater & Saltwater Aquarium Test Kit, 150 count

Rated 4.7 out of 5 stars
21
$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 pH Freshwater Aquarium Test Kit, 250 count

Rated 4.7 out of 5 stars
80
$7.98 Chewy Price
($0.04/ea) Price per Unit
$11.28 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

API Nitrate NO3 Freshwater & Saltwater Aquarium Test Kit, 90 count

Rated 4.7 out of 5 stars
46
$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 Calcium Saltwater Aquarium Test Kit, 1 count

Rated 4.7 out of 5 stars
14
$11.98 Chewy Price
$19.78 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
32
$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

Salifert Aquarium Copper Test Kit

Rated 5 out of 5 stars
2
$16.97 Chewy Price
Autoship Price

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

API KH Carbonate Hardness Fresh & Salt Water Aquarium Test Kit

Rated 4.8 out of 5 stars
13
$8.75 Chewy Price
$12.78 List Price
Autoship Price

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

API Ammonia Freshwater & Saltwater Aquarium Test Kit, 130 count

Rated 4.7 out of 5 stars
50
$15.05 Chewy Price
($0.12/ea) Price per Unit
$21.78 List Price
Autoship Price

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

API Pond Master Test Kit, 500 count

Rated 4.8 out of 5 stars
37
$34.98 Chewy Price
($0.07/ea) Price per Unit
$48.98 List Price
Autoship Price

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

Salifert Aquarium Oxygen Test Kit

Rated 4.7 out of 5 stars
6
$14.89 Chewy Price
$16.09 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 4.3 out of 5 stars
4
$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 High Range pH Fresh & Salt Water Aquarium Test Kit, 160 count

Rated 4.8 out of 5 stars
10
$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

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

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

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

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

Save 5% on repeat deliveries

Fish Type

Aquarium Type

Product Category

Product Type

Brand

7 Brands are shown below

Price

Customer Rating