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Aquarium Test Kits & Water Quality Testers
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Best Sellers
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API® Freshwater Aquarium Master Test Kit
Discounted Price $35.99 Old Price $42.99$34.195% off Auto Ship(113)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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Tetra® 6 N 1 Aquarium Water Test Strips
Discounted Price $13.58 Old Price $29.99$12.905% off Auto Ship(18)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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3 Sizes
API® 5 in 1 Aquarium Test Strips
Discounted Price $6.99 - 24.99 Old Price $9.99 - 24.99$6.64 -23.745% off Auto Ship(48)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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Top Fin® 5-in-1 Water Test Strips
Old Price $16.99$16.145% off Auto Ship(36)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® Calcium Saltwater Aquarium Water Test Kit
Discounted Price $13.99 Old Price $16.99$13.295% off Auto Ship(0)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® Pond Master Test Kit
Discounted Price $35.99 Old Price $49.99$34.195% off Auto Ship(2)Save 35% On Your First Autoship Order!
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Seachem® Alert Combo™ Aquarium pH & Ammonia Detector
Discounted Price $15.49 Old Price $18.99$14.725% off Auto Ship(25)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® Reef Aquarium Water Test Kit
Discounted Price $34.99 Old Price $49.99$33.245% off Auto Ship(0)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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Top Fin® Freshwater Aquarium Master Test Kit
Old Price $37.99$36.095% off Auto Ship(28)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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Tetra® Quick Dip Aquarium Water Test Kit
Discounted Price $6.89 Old Price $18.99$6.555% off Auto Ship(45)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® POND 5 IN 1 Pond Water Test Strips
Discounted Price $14.99 Old Price $19.99$14.245% off Auto Ship(2)Save 35% On Your First Autoship Order!
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API® High Range pH Test Kit
Discounted Price $9.49 Old Price $9.99$9.025% off Auto Ship(0)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® Phosphate Test Kit
Old Price $14.99$14.245% off Auto Ship(0)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® Aquarium Ammonia Test Kit
Discounted Price $15.49 Old Price $21.99$14.725% off Auto Ship(10)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® GH & KH Freshwater Aquarium Test Kit
Old Price $11.99$11.395% off Auto Ship(1)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® Freshwater Aquarium Mini pH Test Kit
Old Price $7.99$7.595% off Auto Ship(5)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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API® Perfect Start
Discounted Price $14.79 Old Price $19.99$14.055% off Auto Ship(1)Buy 2 Get 1 50% all aquatic food and watercare excluding pond
Save 35% On Your First Autoship Order!
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Fluval® Aquarium CO2 Indicator Set
Discounted Price $5.67 Old Price $15.99(3)Free Same-Day Delivery!
