Shop aquarium test kit

Sponsored
$33.54
API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-Colored
Amazon.com
$33.54
API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-Colored
Amazon.com
$33.54
$50.48
API Freshwater Aquarium Master Test Kit, 800 Count
Chewy.com
Special Offer
33% off
$33.54
$50.48
API Freshwater Aquarium Master Test Kit, 800 Count
Chewy.com
Special Offer
$14.99
Aquarium Test Strips - 7 in 1 Fish Tank Water Testing Kit & Ebook - Contains 100 Fast & Accurate Fish Tank Test Strips & 1 Fish Tank Thermometer -
Amazon.com
$14.99
Aquarium Test Strips - 7 in 1 Fish Tank Water Testing Kit & Ebook - Contains 100 Fast & Accurate Fish Tank Test Strips & 1 Fish Tank Thermometer -
Amazon.com
$15.99
Wutest 9-Way Aquarium Test Strips - 150 Aquarium Water Test Kit Fish Tank Test Kit Quick & Accurate Testing Iron Copper Nitrate Nitrite Chlorine
Amazon.com
66
$15.99
Wutest 9-Way Aquarium Test Strips - 150 Aquarium Water Test Kit Fish Tank Test Kit Quick & Accurate Testing Iron Copper Nitrate Nitrite Chlorine
Amazon.com
66
$20.59
Digital Ph/TDS Meter With ATC Ph Tester, 3 in 1 Ph TDS Temp 0.01 Resolution High Accuracy Ph Tester, Ph Meter For Water, Wine, Pool, Aquariums
Amazon.com
2K+
$20.59
Digital Ph/TDS Meter With ATC Ph Tester, 3 in 1 Ph TDS Temp 0.01 Resolution High Accuracy Ph Tester, Ph Meter For Water, Wine, Pool, Aquariums
Amazon.com
2K+
$394.99
Hanna Marine Master Waterproof Wireless Multiparameter Photometer - HI97115
Hanna Instruments
$394.99
Hanna Marine Master Waterproof Wireless Multiparameter Photometer - HI97115
Hanna Instruments
$67.99
Hanna Saltwater Aquarium Alkalinity Colorimeter (Dkh) Checker® HC - HI772
Hanna Instruments
$67.99
Hanna Saltwater Aquarium Alkalinity Colorimeter (Dkh) Checker® HC - HI772
Hanna Instruments
$24.99
API 5-IN-1 TEST STRIPS Freshwater And Saltwater Aquarium Test Strips 100-Count Box
Amazon.com
2K+
$24.99
API 5-IN-1 TEST STRIPS Freshwater And Saltwater Aquarium Test Strips 100-Count Box
Amazon.com
2K+
$67.99
Hanna Marine Nitrate High Range Checker HC - HI782
Hanna Instruments
$67.99
Hanna Marine Nitrate High Range Checker HC - HI782
Hanna Instruments
$31.19
$48.98
API Reef Aquarium Master Test Kit, 1 Count
Chewy.com
Special Offer
36% off
$31.19
$48.98
API Reef Aquarium Master Test Kit, 1 Count
Chewy.com
Special Offer
$118.40
APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester
Amazon.com
Free shipping
$118.40
APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester
Amazon.com
Free shipping
$35.98
API SALTWATER MASTER TEST KIT 550-Test Saltwater Aquarium Water Test Kit
Amazon.com
4K+
Free shipping
$35.98
API SALTWATER MASTER TEST KIT 550-Test Saltwater Aquarium Water Test Kit
Amazon.com
4K+
$35.98
API Freshwater Master Test Kit (MPN 34)
Webb's Water Gardens
$35.98
API Freshwater Master Test Kit (MPN 34)
Webb's Water Gardens
$67.99
Hanna Saltwater Aquarium Calcium Colorimeter - Checker® HC - HI758U
Hanna Instruments
$67.99
Hanna Saltwater Aquarium Calcium Colorimeter - Checker® HC - HI758U
Hanna Instruments
$38.99
$50.48
API Freshwater Master Test Kit: Healthy Aquarium Environment
HardyPaw
37K+
22% off
$38.99
$50.48
API Freshwater Master Test Kit: Healthy Aquarium Environment
HardyPaw
37K+
$6.99
$9.98
API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 4 Count
Chewy.com
Special Offer
29% off
$6.99
$9.98
API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 4 Count
Chewy.com
Special Offer
$67.99
Hanna Marine Nitrate Low Range Checker® HC - HI781
Hanna Instruments
$67.99
Hanna Marine Nitrate Low Range Checker® HC - HI781
Hanna Instruments
$16.99
16 in 1 Home Water Testing Kits For Drinking Water -150 Strips For Swimming Pool, Aquarium, Spa, Tap, Well Water - Testing For Ph, Lead, Hardness,
Amazon.com
162
$16.99
16 in 1 Home Water Testing Kits For Drinking Water -150 Strips For Swimming Pool, Aquarium, Spa, Tap, Well Water - Testing For Ph, Lead, Hardness,
Amazon.com
162
$67.99
Hanna Saltwater Aquarium Ultra Low Range Phosphorus Colorimeter - Checker® HC - HI736
Hanna Instruments
3
$67.99
Hanna Saltwater Aquarium Ultra Low Range Phosphorus Colorimeter - Checker® HC - HI736
Hanna Instruments
3
$15.48
API AMMONIA 130-Test Freshwater And Saltwater Aquarium Water Test Kit
Amazon.com
$15.48
API AMMONIA 130-Test Freshwater And Saltwater Aquarium Water Test Kit
Amazon.com
$38.99
PH Meter & TDS Meter Digital Water Tester 5 in 1 Salinity Tester PH Temp EC And TDS Meter,PH Meter For Water With LCD Backlit,Water Testing Kits For
Amazon.com
9
Free shipping
$38.99
PH Meter & TDS Meter Digital Water Tester 5 in 1 Salinity Tester PH Temp EC And TDS Meter,PH Meter For Water With LCD Backlit,Water Testing Kits For
Amazon.com
9
$67.99
Hanna Saltwater Aquarium Ultra Low Range Nitrite Colorimeter - Checker® HC - HI764
Hanna Instruments
$67.99
Hanna Saltwater Aquarium Ultra Low Range Nitrite Colorimeter - Checker® HC - HI764
Hanna Instruments
$299.99
Hanna Marine Monitor Ph/Salinity/Temperature - HI981520-01
Hanna Instruments
$299.99
Hanna Marine Monitor Ph/Salinity/Temperature - HI981520-01
Hanna Instruments
$12.30
$20.98
API Pond 5-IN-1 Test Strips, 25 Count
Chewy.com
Special Offer
41% off
$12.30
$20.98
API Pond 5-IN-1 Test Strips, 25 Count
Chewy.com
Special Offer
$7.99
$13.19
Tetra Easystrips 6-In-1 Aquarium Test Strips, 25 Count
Chewy.com
Special Offer
39% off
$7.99
$13.19
Tetra Easystrips 6-In-1 Aquarium Test Strips, 25 Count
Chewy.com
Special Offer
$67.99
Hanna Saltwater Aquarium Alkalinity Colorimeter (Ppm) - Checker® HC - HI755
Hanna Instruments
$67.99
Hanna Saltwater Aquarium Alkalinity Colorimeter (Ppm) - Checker® HC - HI755
Hanna Instruments
$7.98
API Freshwater Aquarium Ph Test Kit (MPN 28)
Webb's Water Gardens
90-day returns (most items)
$7.98
API Freshwater Aquarium Ph Test Kit (MPN 28)
Webb's Water Gardens
90-day returns
$35.98
$50.48
API Saltwater Aquarium Master Test Kit, 550 Count
Chewy.com
28% off
$35.98
$50.48
API Saltwater Aquarium Master Test Kit, 550 Count
Chewy.com
$88.99
Dissolved Oxygen Meter With ATC,0-40.00 Mg/L Measurement Range,Dissolved Oxygen Test Kit For Pond Aquarium Aquaculture And Water Fish Tank,DO Meter
Amazon.com
4
Free shipping
$88.99
Dissolved Oxygen Meter With ATC,0-40.00 Mg/L Measurement Range,Dissolved Oxygen Test Kit For Pond Aquarium Aquaculture And Water Fish Tank,DO Meter
Amazon.com
4
$31.51
5-In-1 Aquarium Test Strips
Carolina Biological Supply
$31.51
5-In-1 Aquarium Test Strips
Carolina Biological Supply
$11.99
$16.78
API GH & KH General & Carbonate Hardness Freshwater Aquarium Test Kit
Chewy.com
Special Offer
28% off
$11.99
$16.78
API GH & KH General & Carbonate Hardness Freshwater Aquarium Test Kit
Chewy.com
Special Offer
$13.97
Just Fitter Alkaline Water Ph Test Strips. Testing Kit For Home Drinking Water And Liquids. Universal Tester For Aquarium, Fish Tank, Pool, Hot Tub,
Amazon.com
41
$13.97
Just Fitter Alkaline Water Ph Test Strips. Testing Kit For Home Drinking Water And Liquids. Universal Tester For Aquarium, Fish Tank, Pool, Hot Tub,
Amazon.com
41
$24.99
$50.99
Fluval Mini Master Fish Water Test Kit
Chewy.com
50% off
$24.99
$50.99
Fluval Mini Master Fish Water Test Kit
Chewy.com
$15.99
VIVOSUN Digital Ph And TDS Meter Kits, 0.01Ph High Accuracy Pen Type Ph Meter ± 2% Readout Accuracy 3-In-1 TDS EC Temperature Meter For Hydroponics,
Amazon.com
21K+
$15.99
VIVOSUN Digital Ph And TDS Meter Kits, 0.01Ph High Accuracy Pen Type Ph Meter ± 2% Readout Accuracy 3-In-1 TDS EC Temperature Meter For Hydroponics,
Amazon.com
21K+
$35.00
$48.98
API Pond Master Test Kit, 500 Count
Chewy.com
28% off
$35.00
$48.98
API Pond Master Test Kit, 500 Count
Chewy.com
$36.69
WLR Industries Hanna HI772-26 REAGENTS - 2 Pack - For HI772 Checker Saltwater Aquarium Alkalinity Colorimeter Checker Tester - 50 Test Pack
Amazon.com
Free shipping
$36.69
WLR Industries Hanna HI772-26 REAGENTS - 2 Pack - For HI772 Checker Saltwater Aquarium Alkalinity Colorimeter Checker Tester - 50 Test Pack
Amazon.com
Free shipping
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    Shop aquarium test kit

    Sponsored
    $33.54
    API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-Colored
    Amazon.com
    $33.54
    API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-Colored
    Amazon.com
    $33.54
    $50.48
    API Freshwater Aquarium Master Test Kit, 800 Count
    Chewy.com
    Special Offer
    33% off
    $33.54
    $50.48
    API Freshwater Aquarium Master Test Kit, 800 Count
    Chewy.com
    Special Offer
    $14.99
    Aquarium Test Strips - 7 in 1 Fish Tank Water Testing Kit & Ebook - Contains 100 Fast & Accurate Fish Tank Test Strips & 1 Fish Tank Thermometer -
    Amazon.com
    $14.99
    Aquarium Test Strips - 7 in 1 Fish Tank Water Testing Kit & Ebook - Contains 100 Fast & Accurate Fish Tank Test Strips & 1 Fish Tank Thermometer -
    Amazon.com
    $15.99
    Wutest 9-Way Aquarium Test Strips - 150 Aquarium Water Test Kit Fish Tank Test Kit Quick & Accurate Testing Iron Copper Nitrate Nitrite Chlorine
    Amazon.com
    66
    $15.99
    Wutest 9-Way Aquarium Test Strips - 150 Aquarium Water Test Kit Fish Tank Test Kit Quick & Accurate Testing Iron Copper Nitrate Nitrite Chlorine
    Amazon.com
    66
    $20.59
    Digital Ph/TDS Meter With ATC Ph Tester, 3 in 1 Ph TDS Temp 0.01 Resolution High Accuracy Ph Tester, Ph Meter For Water, Wine, Pool, Aquariums
    Amazon.com
    2K+
    $20.59
    Digital Ph/TDS Meter With ATC Ph Tester, 3 in 1 Ph TDS Temp 0.01 Resolution High Accuracy Ph Tester, Ph Meter For Water, Wine, Pool, Aquariums
    Amazon.com
    2K+
    $394.99
    Hanna Marine Master Waterproof Wireless Multiparameter Photometer - HI97115
    Hanna Instruments
    $394.99
    Hanna Marine Master Waterproof Wireless Multiparameter Photometer - HI97115
    Hanna Instruments
    $67.99
    Hanna Saltwater Aquarium Alkalinity Colorimeter (Dkh) Checker® HC - HI772
    Hanna Instruments
    $67.99
    Hanna Saltwater Aquarium Alkalinity Colorimeter (Dkh) Checker® HC - HI772
    Hanna Instruments
    $24.99
    API 5-IN-1 TEST STRIPS Freshwater And Saltwater Aquarium Test Strips 100-Count Box
    Amazon.com
    2K+
    $24.99
    API 5-IN-1 TEST STRIPS Freshwater And Saltwater Aquarium Test Strips 100-Count Box
    Amazon.com
    2K+
    $67.99
    Hanna Marine Nitrate High Range Checker HC - HI782
    Hanna Instruments
    $67.99
    Hanna Marine Nitrate High Range Checker HC - HI782
    Hanna Instruments
    $31.19
    $48.98
    API Reef Aquarium Master Test Kit, 1 Count
    Chewy.com
    Special Offer
    36% off
    $31.19
    $48.98
    API Reef Aquarium Master Test Kit, 1 Count
    Chewy.com
    Special Offer
    $118.40
    APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester
    Amazon.com
    Free shipping
    $118.40
    APERA INSTRUMENTS AI316 Premium Series PC60 5-In-1 Waterproof Ph/EC (Conductivity) /TDS (Ppm) /Salinity (Ppt) /Temp. Multi-Parameter Pocket Tester
    Amazon.com
    Free shipping
    $35.98
    API SALTWATER MASTER TEST KIT 550-Test Saltwater Aquarium Water Test Kit
    Amazon.com
    4K+
    Free shipping
    $35.98
    API SALTWATER MASTER TEST KIT 550-Test Saltwater Aquarium Water Test Kit
    Amazon.com
    4K+
    $35.98
    API Freshwater Master Test Kit (MPN 34)
    Webb's Water Gardens
    $35.98
    API Freshwater Master Test Kit (MPN 34)
    Webb's Water Gardens
    $67.99
    Hanna Saltwater Aquarium Calcium Colorimeter - Checker® HC - HI758U
    Hanna Instruments
    $67.99
    Hanna Saltwater Aquarium Calcium Colorimeter - Checker® HC - HI758U
    Hanna Instruments
    $38.99
    $50.48
    API Freshwater Master Test Kit: Healthy Aquarium Environment
    HardyPaw
    37K+
    22% off
    $38.99
    $50.48
    API Freshwater Master Test Kit: Healthy Aquarium Environment
    HardyPaw
    37K+
    $6.99
    $9.98
    API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 4 Count
    Chewy.com
    Special Offer
    29% off
    $6.99
    $9.98
    API 5 in 1 Freshwater & Saltwater Aquarium Test Strips, 4 Count
    Chewy.com
    Special Offer
    $67.99
    Hanna Marine Nitrate Low Range Checker® HC - HI781
    Hanna Instruments
    $67.99
    Hanna Marine Nitrate Low Range Checker® HC - HI781
    Hanna Instruments
    $16.99
    16 in 1 Home Water Testing Kits For Drinking Water -150 Strips For Swimming Pool, Aquarium, Spa, Tap, Well Water - Testing For Ph, Lead, Hardness,
    Amazon.com
    162
    $16.99
    16 in 1 Home Water Testing Kits For Drinking Water -150 Strips For Swimming Pool, Aquarium, Spa, Tap, Well Water - Testing For Ph, Lead, Hardness,
    Amazon.com
    162