All Water Types Aquarium Water Test Kits

547 Results

100/200 Aquarium Test Strips Fish Tank 7IN1#PH Water Test Strips Kit Freshwater
Brand New · Unbranded
$9.49
Free shipping
S⁣p⁣4⁣o⁣n⁣s⁣6⁣ ⁣o⁣r⁣1⁣e⁣3⁣d⁣⁣⁣ ⁣4⁣⁣⁣⁣5⁣⁣⁣⁣⁣⁣⁣
Aquarium Water Quality Test Tubes (5) (API Master Test Kit Upgrade/replacement)
Brand New
$9.99
Free shipping
Only 1 left!
S⁣p⁣o⁣n⁣s⁣o⁣r⁣e⁣T⁣M⁣d⁣ ⁣⁣O⁣⁣W⁣ ⁣⁣Y⁣⁣H⁣⁣⁣⁣⁣⁣ ⁣U⁣
AAwipes Aquarium Ammonia Test Strips 8-in-1 |100 Strips | Quick & Accurate Water
Brand New
$14.89
or Best Offer
Free shipping
⁣⁣G⁣⁣⁣⁣9⁣⁣ ⁣⁣T⁣⁣⁣⁣⁣2⁣ ⁣B⁣⁣⁣⁣E⁣ ⁣U⁣7⁣⁣ ⁣⁣
API Ammonia Test Kit
Brand New · API
$15.49
Free shipping
86 sold
⁣I⁣⁣⁣Y⁣⁣⁣⁣⁣ ⁣B⁣V⁣⁣⁣ ⁣⁣9⁣⁣⁣I⁣⁣ ⁣K⁣⁣B⁣⁣⁣⁣
Seachem Ammonia Alert Continuous Ammonia Readings Freshwater & Marine Aquariums
Brand New · Seachem
(28)
$7.50
$1.50 shipping
V⁣⁣Z⁣⁣ ⁣⁣⁣5⁣M⁣ ⁣⁣⁣⁣⁣K⁣U⁣⁣⁣ ⁣⁣J⁣F⁣⁣⁣ ⁣Y⁣B⁣⁣
Salifert Carbonate Hardness Alkalinity KH/Alk Aquarium Test Kit
Brand New · Salifert
(3)
$16.46
Free shipping
⁣⁣⁣⁣⁣⁣⁣C⁣L⁣ ⁣L⁣L⁣⁣ ⁣⁣⁣⁣A⁣⁣⁣Q⁣ ⁣⁣⁣T⁣⁣⁣N⁣
API KH Test Kit
Brand New · API
(20)
$11.29
Free shipping
K⁣S⁣ ⁣O⁣⁣⁣I⁣ ⁣8⁣T⁣⁣ ⁣J⁣⁣⁣⁣⁣⁣⁣⁣X⁣⁣ ⁣⁣⁣⁣Y⁣V⁣
Seachem Ammonia Alert Fish Tank Aquarium Testing Maintenance (2-pack) Sealed
Brand New · Seachem
(28)
$14.99
Free shipping
I⁣⁣B⁣⁣ ⁣E⁣N⁣ ⁣⁣⁣⁣O⁣⁣⁣1⁣ ⁣⁣U⁣⁣1⁣⁣ ⁣⁣R⁣X⁣⁣ ⁣⁣
Tetra EasyStrips 6-In-1 aquarium Test Strips Water Testing 19542
Brand New · Tétra
(35)
$13.96
or Best Offer
Free shipping
Z⁣C⁣⁣ ⁣I⁣U⁣ ⁣P⁣M⁣⁣ ⁣5⁣⁣⁣⁣⁣⁣⁣⁣U⁣ ⁣L⁣Y⁣ ⁣⁣R⁣⁣⁣
API Nitrate Test Kit
Brand New · API
(20)
$14.49
Free shipping
141 sold
⁣5⁣⁣R⁣ ⁣⁣4⁣⁣⁣⁣7⁣⁣⁣ ⁣⁣Q⁣Z⁣ ⁣⁣⁣7⁣⁣⁣L⁣⁣ ⁣T⁣⁣
Multifunctional 4 in 1 Digital PH/EC/TDS - LCD Aquarium Water Quality Tester
Brand New
(5)
$20.00
Free shipping
A⁣⁣8⁣ ⁣⁣2⁣N⁣⁣⁣⁣⁣⁣⁣ ⁣F⁣I⁣ ⁣T⁣⁣1⁣ ⁣Y⁣⁣⁣Z⁣⁣⁣ ⁣
Aqueon 7-in-1 Aquarium Test Strips
Brand New · Aqueon
$4.71
$4.08 shipping
⁣⁣⁣6⁣B⁣ ⁣⁣⁣⁣A⁣⁣⁣R⁣ ⁣E⁣G⁣ ⁣9⁣⁣⁣E⁣⁣⁣ ⁣B⁣⁣N⁣⁣
SR Aquaristik Aquarium Speed Test Mixer, Portable Fish Tank Water Test Kit Mixer
Brand New
(6)
$39.98
$16.00 shipping
95 sold
S⁣0⁣L⁣p⁣o⁣ ⁣n⁣s⁣4⁣O⁣o⁣ ⁣4⁣r⁣e⁣B⁣d⁣⁣ ⁣⁣G⁣7⁣⁣ ⁣3⁣Z⁣ ⁣⁣
100/200 Aquarium Test Strips Fish Tank 7IN1PH Water Test Strips Kit Freshwater^^
Brand New · Unbranded
$9.49
Free shipping
X⁣P⁣ ⁣S⁣p⁣o⁣n⁣S⁣s⁣S⁣o⁣r⁣e⁣ ⁣Z⁣d⁣C⁣⁣⁣⁣ ⁣B⁣⁣⁣⁣V⁣⁣ ⁣
MERYDI-2 IN 1 Nitrite 0-3 ppm, Nitrate 0-50 ppm aquarium Test Strips Water Test
Brand New
$9.90
or Best Offer
Free shipping
8⁣M⁣S⁣p⁣ ⁣7⁣L⁣ ⁣o⁣4⁣V⁣n⁣ ⁣S⁣W⁣s⁣o⁣r⁣e⁣ ⁣A⁣Y⁣d⁣ ⁣⁣U⁣⁣⁣
100/50 Aquarium Test Strips Fish Tank 7IN1 PH Water Test Strips Kit Freshwater·
Brand New · Unbranded
$9.29
Free shipping
K⁣S⁣p⁣Z⁣o⁣ ⁣G⁣4⁣ ⁣n⁣s⁣6⁣o⁣r⁣Q⁣e⁣ ⁣d⁣⁣⁣⁣5⁣T⁣⁣⁣ ⁣⁣5⁣
Seachem Ammonia Alert
Brand New · Seachem
(28)
$10.69
Free shipping
8⁣⁣1⁣ ⁣N⁣1⁣ ⁣5⁣6⁣ ⁣⁣⁣Q⁣⁣⁣F⁣⁣ ⁣K⁣I⁣ ⁣⁣⁣⁣7⁣⁣⁣⁣
Aquarium Test Tube Holder Drying Rack Stand for API Master Test Kit Freshwater
Brand New · Unbranded
$14.99
Free shipping
U⁣Z⁣ ⁣⁣⁣⁣⁣⁣⁣W⁣⁣⁣J⁣⁣⁣ ⁣M⁣⁣0⁣ ⁣⁣⁣U⁣Q⁣ ⁣C⁣M⁣⁣
Hanna Instruments HI 98107 pHep pH Tester Reef Marine Coral Fish Tank Water Test
Pre-Owned · Hanna
$33.00
or Best Offer
$8.54 shipping
⁣V⁣D⁣ ⁣⁣⁣⁣⁣⁣⁣T⁣⁣G⁣ ⁣B⁣⁣⁣⁣9⁣ ⁣6⁣O⁣⁣ ⁣X⁣6⁣ ⁣O⁣
API Nitrite Test Kit
Brand New · API
(11)
$12.99
Free shipping
S⁣⁣D⁣⁣⁣ ⁣1⁣9⁣ ⁣K⁣G⁣ ⁣X⁣F⁣⁣⁣⁣ ⁣2⁣⁣⁣⁣⁣⁣V⁣⁣⁣⁣
Salifert Calcium Test Kit- Free US Shipping
Brand New · Salifert
(20)
$20.99
or Best Offer
Free shipping
54 sold
⁣B⁣Y⁣ ⁣⁣⁣⁣U⁣D⁣ ⁣⁣⁣S⁣⁣⁣⁣⁣⁣⁣W⁣⁣ ⁣⁣X⁣X⁣ ⁣N⁣T⁣
ATI - ATI ICP-OES COMPLETE WATER TEST KIT (W/ PREPAID SHIPPING LABEL)
Brand New
(2)
$40.00
Free shipping
H⁣⁣6⁣ ⁣D⁣⁣⁣⁣P⁣ ⁣N⁣⁣⁣⁣⁣C⁣ ⁣N⁣⁣K⁣⁣ ⁣⁣⁣9⁣X⁣ ⁣P⁣
Phosphate Test Kit
Brand New · Salifert
(8)
$10.77
Free shipping
Only 1 left!
R⁣⁣5⁣ ⁣K⁣U⁣ ⁣⁣⁣⁣⁣D⁣J⁣ ⁣⁣Y⁣E⁣⁣⁣ ⁣⁣⁣U⁣⁣⁣D⁣⁣ ⁣
API Test Tubes 24 Replacement Glass Test Tubes for all API Aquarium Test Kits
Brand New · API
(14)
$26.81
Was: $28.22was - US $28.22
or Best Offer
Free shipping
⁣F⁣⁣⁣⁣E⁣⁣⁣⁣ ⁣V⁣⁣⁣Q⁣⁣⁣⁣ ⁣⁣⁣X⁣J⁣ ⁣Z⁣⁣⁣B⁣ ⁣
Tetra EasyStrips 6-In-1 aquarium Test Strips, Water Testing (19542)
Brand New · Tétra
(35)
$11.49
or Best Offer
Trending at $11.69
Free shipping
Only 1 left!
⁣X⁣⁣L⁣⁣⁣ ⁣⁣⁣P⁣⁣⁣⁣P⁣ ⁣⁣⁣⁣W⁣V⁣ ⁣⁣E⁣⁣⁣I⁣⁣ ⁣
Seachem Multi Test Nitrite/Nitrate Test Kit
Brand New · Seachem
(3)
$14.39
Free shipping
37 sold
J⁣W⁣⁣⁣⁣ ⁣⁣⁣O⁣X⁣⁣⁣⁣⁣ ⁣⁣E⁣M⁣⁣⁣ ⁣⁣⁣⁣⁣⁣9⁣S⁣
Master Liquid Test Kit - Fritz Aquatics
Brand New
$36.74
Free shipping
Only 1 left!
H⁣W⁣ ⁣E⁣⁣Y⁣⁣ ⁣⁣W⁣⁣4⁣ ⁣⁣⁣⁣⁣D⁣⁣V⁣ ⁣⁣I⁣⁣D⁣⁣ ⁣U⁣
API Nitrate NO 3 Test Kit - Aquarium Freshwater / Saltwater 90 Tests LR1800 New
Brand New · API
(20)
$14.99
or Best Offer
Free shipping
Y⁣⁣⁣J⁣⁣ ⁣⁣⁣E⁣⁣7⁣⁣ ⁣M⁣V⁣ ⁣⁣⁣⁣G⁣2⁣ ⁣⁣L⁣D⁣ ⁣⁣⁣
100/50x Aquarium Test Strips Fish Tank 7 in1 PH Water Test Strips Kit Freshwater
Brand New · Unbranded
$9.99
Free shipping
S⁣J⁣p⁣8⁣ ⁣o⁣n⁣7⁣s⁣o⁣r⁣e⁣T⁣d⁣⁣ ⁣5⁣S⁣⁣⁣ ⁣⁣⁣⁣K⁣S⁣ ⁣G⁣
100pcs Fast Accurate 7 in 1 Aquarium Test Kit for Freshwater Fish tank Aquariums
Brand New
$9.99
or Best Offer
Free shipping
S⁣p⁣o⁣O⁣D⁣ ⁣0⁣n⁣s⁣o⁣D⁣ ⁣9⁣r⁣e⁣d⁣U⁣⁣ ⁣U⁣J⁣⁣⁣ ⁣F⁣G⁣ ⁣8⁣
Reefing Concepts Hanna Test Kit Organizer (Organizer Only) SALTWATER
Brand New · Hanna
$35.99
or Best Offer
$9.75 shipping
23 sold
S⁣p⁣F⁣A⁣o⁣n⁣ ⁣H⁣s⁣C⁣ ⁣L⁣L⁣o⁣ ⁣M⁣W⁣r⁣e⁣ ⁣B⁣d⁣⁣A⁣⁣⁣⁣⁣
50/100Pcs 7in1 PH Test Strips Tropical Aquarium Cold Water Fish Tank Testing Kit
Brand New · Unbranded
$9.39
Free shipping
S⁣B⁣N⁣ ⁣p⁣F⁣2⁣ ⁣o⁣H⁣n⁣U⁣ ⁣s⁣o⁣r⁣L⁣L⁣ ⁣8⁣e⁣d⁣Q⁣ ⁣⁣⁣A⁣⁣
API Nitrate Test Kit Complete 90 Tests Safe for both Freswater/Saltwater Easy
Pre-Owned · Aquarium Pharmaceuticals
(20)
$6.99
$4.52 shipping
⁣⁣⁣M⁣⁣⁣5⁣ ⁣9⁣C⁣⁣⁣ ⁣⁣⁣⁣P⁣⁣F⁣⁣ ⁣⁣⁣7⁣⁣⁣H⁣⁣
Tetra EasyStrips 6-In-1 aquarium Test Strips Water Testing 19542
Brand New · Tétra
(35)
$12.09
or Best Offer
Free shipping
4⁣N⁣⁣ ⁣S⁣⁣⁣⁣N⁣ ⁣⁣⁣M⁣S⁣⁣⁣ ⁣Q⁣⁣L⁣ ⁣W⁣N⁣ ⁣⁣4⁣⁣⁣
Phosphate Test Kit
Brand New · Salifert
(8)
$10.68
Free shipping
H⁣⁣⁣V⁣ ⁣⁣⁣⁣G⁣⁣I⁣⁣⁣⁣⁣ ⁣⁣W⁣⁣⁣J⁣⁣⁣⁣ ⁣⁣T⁣⁣
API 5 in 1 Aquarium Test Strips 100 Count pH KH GH Nitrate Freshwater Saltwater
Brand New · API
(3)
$30.16
Was: $31.75was - US $31.75
or Best Offer
Free shipping
A⁣4⁣ ⁣7⁣⁣⁣⁣Z⁣ ⁣⁣⁣T⁣Y⁣⁣ ⁣⁣⁣⁣⁣5⁣5⁣⁣ ⁣⁣T⁣⁣⁣O⁣
Seachem One Year Alert Combo Continuous pH and Ammonia Readings for Aquariums
Brand New · Seachem
$20.24
Was: $22.49was - US $22.49
or Best Offer
Free shipping
S⁣3⁣ ⁣Z⁣⁣L⁣⁣ ⁣X⁣⁣R⁣ ⁣9⁣⁣⁣U⁣⁣ ⁣W⁣2⁣ ⁣⁣⁣⁣⁣⁣⁣ ⁣
Seachem Ammonia Alert Fish Tank Aquarium Testing Maintenance
Brand New · Seachem
(28)
$12.50
Free shipping
2⁣⁣2⁣⁣ ⁣N⁣⁣⁣R⁣ ⁣⁣S⁣L⁣ ⁣S⁣9⁣ ⁣⁣5⁣X⁣⁣⁣ ⁣I⁣⁣⁣⁣⁣
MERYDI-50pcs Ammonia Nitrogen Test Paper Water Quality Test Strips for Aquarium
Brand New
$9.99
or Best Offer
Free shipping
S⁣A⁣R⁣p⁣o⁣ ⁣9⁣n⁣s⁣Z⁣o⁣ ⁣R⁣r⁣e⁣A⁣ ⁣F⁣L⁣d⁣ ⁣M⁣⁣⁣⁣⁣⁣⁣
HI98103 Checker pH Tester with 0.1 pH Resolution - Hanna Instruments
Pre-Owned · Hanna
(26)
$34.99
$6.22 shipping
S⁣p⁣4⁣P⁣o⁣n⁣s⁣o⁣r⁣ ⁣7⁣0⁣ ⁣e⁣B⁣5⁣ ⁣d⁣⁣V⁣2⁣⁣ ⁣⁣⁣R⁣7⁣ ⁣
API Ammonia Test Kit 130 Tests for Freshwater and Marine Aquariums NH3 / NH4
Brand New · API
(67)
$17.87
Was: $18.81was - US $18.81
or Best Offer
Free shipping
56 sold
O⁣⁣⁣8⁣ ⁣F⁣W⁣ ⁣I⁣⁣7⁣ ⁣N⁣5⁣⁣⁣⁣ ⁣0⁣⁣⁣N⁣ ⁣⁣⁣⁣⁣ ⁣
Seachem MultiTest Iron Test Kit for Freshwater and Marine Aquariums 75 Tests
Brand New · Seachem
(6)
$20.24
Was: $22.49was - US $22.49
or Best Offer
Free shipping
⁣⁣⁣⁣6⁣⁣⁣M⁣ ⁣M⁣U⁣⁣ ⁣⁣⁣⁣0⁣⁣⁣P⁣ ⁣O⁣⁣9⁣ ⁣⁣⁣8⁣
API Phosphate PO4 Test Kit (150 Ct) Freshwater & Saltwater Fish Tank Exp 6/26
Brand New · API
(31)
$10.85
Trending at $13.99
Free shipping
J⁣⁣⁣⁣I⁣⁣⁣⁣ ⁣⁣E⁣4⁣⁣⁣ ⁣⁣⁣⁣⁣0⁣⁣F⁣ ⁣⁣W⁣⁣P⁣ ⁣
Salifert Test Kit Silicate Fish Tank Aquarium Testing Maintenance
Brand New · Salifert
(1)
$18.03
Free shipping
⁣5⁣4⁣ ⁣W⁣⁣6⁣⁣ ⁣⁣K⁣P⁣ ⁣8⁣S⁣ ⁣⁣T⁣⁣⁣1⁣ ⁣⁣⁣⁣P⁣⁣⁣
HI98103 Checker pH Tester with 0.1 pH Resolution - Hanna Instruments
Brand New · Hanna
(26)
$43.95
$3.49 shipping
W⁣O⁣⁣ ⁣U⁣P⁣⁣ ⁣⁣⁣⁣Q⁣B⁣ ⁣⁣T⁣⁣⁣⁣⁣⁣⁣⁣⁣K⁣⁣ ⁣U⁣
Hanna High Range Copper Colorimeter - Checker HC
Brand New · Hanna
(1)
$59.45
or Best Offer
Free shipping
⁣S⁣V⁣ ⁣7⁣⁣⁣Q⁣ ⁣⁣8⁣T⁣ ⁣Z⁣⁣I⁣⁣⁣ ⁣3⁣1⁣⁣⁣ ⁣⁣⁣⁣⁣
New Seachem MultiTest Iodine & Iodide Fish Tank Aquarium 75-tests per box
Brand New · Seachem
(2)
$14.39
Was: $17.99was - US $17.99
Free shipping
K⁣⁣⁣⁣D⁣ ⁣A⁣8⁣ ⁣⁣⁣1⁣⁣⁣4⁣ ⁣⁣⁣⁣F⁣T⁣ ⁣A⁣A⁣⁣ ⁣R⁣⁣
API High Range PH Test Kit
Brand New · API
(14)
$10.99
Free shipping
18 sold
⁣C⁣⁣⁣L⁣ ⁣6⁣6⁣⁣ ⁣D⁣S⁣ ⁣⁣⁣J⁣D⁣ ⁣⁣U⁣⁣⁣B⁣⁣⁣⁣⁣⁣
Seachem Copper Test Kit
Brand New · Seachem
(7)
$17.99
Free shipping
Only 1 left!
F⁣⁣⁣B⁣ ⁣8⁣K⁣⁣⁣⁣⁣⁣⁣⁣⁣ ⁣2⁣⁣Y⁣ ⁣9⁣⁣L⁣⁣⁣⁣⁣⁣
Hanna Instruments Test Kits. *Zoom In On Exp Date
Brand New · Hanna
$175.00
$11.24 shipping
⁣⁣Y⁣C⁣⁣⁣⁣⁣⁣ ⁣F⁣⁣⁣⁣J⁣ ⁣⁣⁣C⁣3⁣ ⁣V⁣G⁣ ⁣N⁣⁣⁣⁣
API NITRITE TEST KIT 180-Test Freshwater and Saltwater Aquarium Test Kit
Brand New · API
(11)
$12.49
Trending at $12.99
Free shipping
Only 1 left!
T⁣5⁣ ⁣Q⁣⁣D⁣⁣ ⁣⁣⁣1⁣⁣F⁣ ⁣⁣⁣5⁣⁣N⁣ ⁣O⁣⁣⁣⁣⁣⁣⁣⁣
FLUVAL MINI MASTER TEST KIT
Brand New · Fluval
(5)
$29.99
Free shipping
Only 1 left!
G⁣5⁣⁣⁣ ⁣⁣⁣⁣J⁣7⁣ ⁣6⁣⁣⁣⁣⁣⁣⁣⁣Y⁣⁣ ⁣Q⁣⁣6⁣ ⁣⁣H⁣
FLUVAL Master Test Kit Fresh/Saltwater A7867 for pH, Ammonia, Nitrite, Nitrate
Brand New · Fluval
(5)
$27.19
Was: $31.99was - US $31.99
Free shipping
⁣⁣⁣4⁣7⁣⁣ ⁣E⁣⁣⁣⁣J⁣⁣ ⁣⁣⁣K⁣6⁣ ⁣⁣⁣⁣⁣⁣⁣L⁣⁣K⁣
API KH Test Kit Carbonate Hardness Test Kit for Fresh & Salt Water
Brand New · API
(20)
$13.40
Was: $14.11was - US $14.11
or Best Offer
Free shipping
C⁣A⁣ ⁣⁣⁣4⁣⁣⁣H⁣⁣ ⁣9⁣E⁣ ⁣⁣X⁣⁣⁣T⁣⁣⁣ ⁣C⁣⁣⁣O⁣⁣ ⁣
Mount Only Hanna Phosphate Checker Aquarium Test Kit Wall or Desk Mount
Brand New
$11.04
Was: $12.99was - US $12.99
or Best Offer
Free shipping
⁣⁣⁣6⁣K⁣ ⁣C⁣X⁣ ⁣3⁣⁣Q⁣ ⁣O⁣⁣⁣Z⁣ ⁣J⁣U⁣ ⁣X⁣⁣ ⁣⁣⁣⁣⁣
HI702-25 Copper High Range Checker® Reagents (25 Tests) - Hanna Instruments
Brand New · Hanna
$17.99
$4.99 shipping
187 sold
⁣I⁣⁣⁣I⁣ ⁣X⁣5⁣ ⁣⁣6⁣⁣⁣⁣⁣Z⁣ ⁣X⁣Q⁣ ⁣⁣⁣⁣⁣⁣0⁣0⁣ ⁣
Seachem MultiTest Iodine Iodide Fish Tank Aquarium Testing Maintenance Test Kit
Brand New · Seachem
(2)
$17.95
Free shipping
4 watching
⁣U⁣⁣⁣Z⁣ ⁣⁣⁣8⁣H⁣ ⁣V⁣X⁣⁣⁣⁣⁣⁣⁣⁣ ⁣⁣⁣I⁣⁣⁣⁣T⁣
Salifert Nitrate Aquarium Test Kit
Brand New · Salifert
(2)
$17.37
Free shipping
⁣⁣⁣N⁣⁣V⁣ ⁣W⁣⁣⁣⁣M⁣⁣ ⁣6⁣⁣⁣A⁣ ⁣4⁣E⁣⁣⁣ ⁣⁣L⁣K⁣⁣
New models 6-in-1 water quality testing strip for fish ponds Aquarium Test Strip
Brand New
$9.90
or Best Offer
Free shipping
S⁣p⁣o⁣n⁣K⁣I⁣ ⁣E⁣s⁣Z⁣o⁣ ⁣S⁣r⁣B⁣e⁣d⁣⁣⁣⁣ ⁣⁣⁣⁣⁣⁣⁣H⁣
100/50x Pond Test Strips 7in1 Water Testing Kit for Freshwater Aquarium FishTank
Brand New · Unbranded
$9.79
Free shipping
S⁣p⁣o⁣X⁣n⁣T⁣ ⁣s⁣Z⁣Q⁣o⁣ ⁣r⁣e⁣d⁣A⁣L⁣ ⁣O⁣P⁣ ⁣R⁣U⁣⁣ ⁣⁣⁣⁣

Best Selling

See All

Top Rated

See All

API LR8600 F/S Ammonia Watr Test
(67)

100% agree - Would recommend
$15.48 New
Tetra EasyStrips 6 in 1 Aquarium Test Strips 25 Count
(35)

100% agree - Would recommend
$11.49 New
$8.99 Used
API Phosphate Test Kit 150 Tests Liquid 63l
(31)

100% agree - Would recommend
$13.99 New
Salifert Calcium Ca Test Kit 50 to 100 Tests
(20)

100% agree - Would recommend
$20.99 New
Salifert No3 Nitrate Test Kit up to 60 Tests
(17)

100% agree - Would recommend
$19.99 New
API High Range Ph Test Kit 1 1/4 FL Oz. Aph27 Mars Fishcare
(14)

100% agree - Would recommend
$9.50 New
API Replacement Test Tubes With Caps 24ct
(14)

100% agree - Would recommend
$26.59 New
Salifert Po4 Profi Test Kit Phosphate 60 Aquarium Tests
(8)

100% agree - Would recommend
$10.68 New

All Water Types Aquarium Water Test Kits

Shop by Category

547 Results

100/200 Aquarium Test Strips Fish Tank 7IN1#PH Water Test Strips Kit Freshwater

Aquarium Water Quality Test Tubes (5) (API Master Test Kit Upgrade/replacement)

AAwipes Aquarium Ammonia Test Strips 8-in-1 |100 Strips | Quick & Accurate Water

API Ammonia Test Kit

Seachem Ammonia Alert Continuous Ammonia Readings Freshwater & Marine Aquariums

Salifert Carbonate Hardness Alkalinity KH/Alk Aquarium Test Kit

API KH Test Kit

Seachem Ammonia Alert Fish Tank Aquarium Testing Maintenance (2-pack) Sealed

Tetra EasyStrips 6-In-1 aquarium Test Strips Water Testing 19542

API Nitrate Test Kit

Multifunctional 4 in 1 Digital PH/EC/TDS - LCD Aquarium Water Quality Tester

Aqueon 7-in-1 Aquarium Test Strips

SR Aquaristik Aquarium Speed Test Mixer, Portable Fish Tank Water Test Kit Mixer

100/200 Aquarium Test Strips Fish Tank 7IN1PH Water Test Strips Kit Freshwater^^

MERYDI-2 IN 1 Nitrite 0-3 ppm, Nitrate 0-50 ppm aquarium Test Strips Water Test

100/50 Aquarium Test Strips Fish Tank 7IN1 PH Water Test Strips Kit Freshwater·

Seachem Ammonia Alert

Aquarium Test Tube Holder Drying Rack Stand for API Master Test Kit Freshwater

Hanna Instruments HI 98107 pHep pH Tester Reef Marine Coral Fish Tank Water Test

API Nitrite Test Kit

Salifert Calcium Test Kit- Free US Shipping

ATI - ATI ICP-OES COMPLETE WATER TEST KIT (W/ PREPAID SHIPPING LABEL)

Phosphate Test Kit

API Test Tubes 24 Replacement Glass Test Tubes for all API Aquarium Test Kits

Tetra EasyStrips 6-In-1 aquarium Test Strips, Water Testing (19542)

Seachem Multi Test Nitrite/Nitrate Test Kit

Master Liquid Test Kit - Fritz Aquatics

API Nitrate NO 3 Test Kit - Aquarium Freshwater / Saltwater 90 Tests LR1800 New

100/50x Aquarium Test Strips Fish Tank 7 in1 PH Water Test Strips Kit Freshwater

100pcs Fast Accurate 7 in 1 Aquarium Test Kit for Freshwater Fish tank Aquariums

Reefing Concepts Hanna Test Kit Organizer (Organizer Only) SALTWATER

50/100Pcs 7in1 PH Test Strips Tropical Aquarium Cold Water Fish Tank Testing Kit

API Nitrate Test Kit Complete 90 Tests Safe for both Freswater/Saltwater Easy

Tetra EasyStrips 6-In-1 aquarium Test Strips Water Testing 19542

Phosphate Test Kit

API 5 in 1 Aquarium Test Strips 100 Count pH KH GH Nitrate Freshwater Saltwater

Seachem One Year Alert Combo Continuous pH and Ammonia Readings for Aquariums

Seachem Ammonia Alert Fish Tank Aquarium Testing Maintenance

MERYDI-50pcs Ammonia Nitrogen Test Paper Water Quality Test Strips for Aquarium

HI98103 Checker pH Tester with 0.1 pH Resolution - Hanna Instruments

API Ammonia Test Kit 130 Tests for Freshwater and Marine Aquariums NH3 / NH4

Seachem MultiTest Iron Test Kit for Freshwater and Marine Aquariums 75 Tests

API Phosphate PO4 Test Kit (150 Ct) Freshwater & Saltwater Fish Tank Exp 6/26

Salifert Test Kit Silicate Fish Tank Aquarium Testing Maintenance

HI98103 Checker pH Tester with 0.1 pH Resolution - Hanna Instruments

Hanna High Range Copper Colorimeter - Checker HC

New Seachem MultiTest Iodine & Iodide Fish Tank Aquarium 75-tests per box

API High Range PH Test Kit

Seachem Copper Test Kit

Hanna Instruments Test Kits. *Zoom In On Exp Date

API NITRITE TEST KIT 180-Test Freshwater and Saltwater Aquarium Test Kit

FLUVAL MINI MASTER TEST KIT

FLUVAL Master Test Kit Fresh/Saltwater A7867 for pH, Ammonia, Nitrite, Nitrate

API KH Test Kit Carbonate Hardness Test Kit for Fresh & Salt Water

Mount Only Hanna Phosphate Checker Aquarium Test Kit Wall or Desk Mount

HI702-25 Copper High Range Checker® Reagents (25 Tests) - Hanna Instruments

Seachem MultiTest Iodine Iodide Fish Tank Aquarium Testing Maintenance Test Kit

Salifert Nitrate Aquarium Test Kit

New models 6-in-1 water quality testing strip for fish ponds Aquarium Test Strip

100/50x Pond Test Strips 7in1 Water Testing Kit for Freshwater Aquarium FishTank

Best Selling

Seachem Labs Ammonia Alert Aquarium Water Test Kit

API 5 in 1 Test Strips 100 Count Freshwater Saltwater Aquarium 5in1 Ammonia

API Phosphate Test Kit 150 Tests Liquid 63l

Tetra EasyStrips 6 in 1 Aquarium Test Strips 25 Count

Fritz Freshwater and Saltwater Master Test Kit 1ea/One Size

Hanna Instruments HI701 Checker HC Handheld Colorimeter Chlorine

API High Range Ph Test Kit 1 1/4 FL Oz. Aph27 Mars Fishcare

API Nitrite No2 Test Kit Aquarium 180 Tests Fresh or Salt Water Tanks

Top Rated

API LR8600 F/S Ammonia Watr Test

Tetra EasyStrips 6 in 1 Aquarium Test Strips 25 Count

API Phosphate Test Kit 150 Tests Liquid 63l

Salifert Calcium Ca Test Kit 50 to 100 Tests

Salifert No3 Nitrate Test Kit up to 60 Tests

API High Range Ph Test Kit 1 1/4 FL Oz. Aph27 Mars Fishcare

API Replacement Test Tubes With Caps 24ct