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Aquarium Test Kits & Water Quality Testers
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API® Freshwater Aquarium Mini pH Test Kit
Old Price $ 9.99(3)Sign In & Enjoy Free Same Day Delivery or Free Shipping On Orders $49+
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API® Freshwater Aquarium Master Test Kit
Old Price $ 49.99(90)Sign in & Save an Additional 15% off with Free Same-Day Delivery!
Sign in & Save 15% on your first Autoship Order!
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Seachem® Alert Combo™ Aquarium pH & Ammonia Detector
Old Price $ 19.99(21)Sign in & Save an Additional 15% off with Free Same-Day Delivery!
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Fluval Master Test Kit
Old Price $ 49.99(1)Sign in & Save 15% on your first Autoship Order!
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Top Fin® 5-in-1 Water Test Strips
Old Price $ 21.99(4)Sign in & Save an Additional 15% off with Free Same-Day Delivery!
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New
API® Calcium Saltwater Aquarium Water Test Kit
Old Price $ 19.99(0)Sign In & Enjoy Free Same Day Delivery or Free Shipping On Orders $49+
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2 Sizes
API® 5 in 1 Aquarium Test Strips
Old Price $ 11.99 - 25.99(31)Sign in & Save an Additional 15% off with Free Same-Day Delivery!
Sign in & Save 15% on your first Autoship Order!
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Top Fin® Freshwater Aquarium Master Test Kit
Old Price $ 42.99(0)Sign in & Save 15% on your first Autoship Order!
Sign In & Enjoy Free Same Day Delivery or Free Shipping On Orders $49+
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API® Pond Master Test Kit
Old Price $ 49.99(2)Sign in & Save an Additional 15% off with Free Same-Day Delivery!
Earn 5X Bonus Treats points | See details to activate
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Tetra® 6 N 1 Aquarium Water Test Strips
Old Price $ 36.99(15)Sign in & Save an Additional 15% off with Free Same-Day Delivery!
Sign in & Save 15% on your first Autoship Order!
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API® Aquarium Ammonia Test Kit
Old Price $ 22.99(7)Sign in & Save an Additional 15% off with Free Same-Day Delivery!
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New
API® High Range pH Test Kit
Old Price $ 11.99(0)Sign In & Enjoy Free Same Day Delivery or Free Shipping On Orders $49+
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New
API® Reef Aquarium Water Test Kit
Old Price $ 49.99(0)Sign In & Enjoy Free Same Day Delivery or Free Shipping On Orders $49+