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Aquarium Test Kits & Water Quality Testers
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API® Freshwater Aquarium Master Test Kit
Discounted Price $35.98 Old Price $39.99(126)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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Tetra® 6 N 1 Aquarium Water Test Strips
Discounted Price $13.49 Old Price $27.99(23)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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3 Sizes
API® 5 in 1 Aquarium Test Strips
Discounted Price $6.98 - 24.98 Old Price $9.99 - 24.99(54)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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Top Fin® Freshwater Aquarium Master Test Kit
Discounted Price $18.67 Old Price $37.99(31)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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Top Fin® 5-in-1 Water Test Strips
Old Price $16.99(40)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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Seachem® Alert Combo™ Aquarium pH & Ammonia Detector
Discounted Price $9.54 Old Price $18.99(31)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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API® Reef Aquarium Water Test Kit
Discounted Price $35.99 Old Price $49.99(0)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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API® Freshwater Aquarium Mini pH Test Kit
Discounted Price $7.98 Old Price $7.99(6)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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API® Pond Master Test Kit
Discounted Price $34.98 Old Price $49.99(2)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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API® GH & KH Freshwater Aquarium Test Kit
Old Price $11.99(1)SAVE 35% on your first Autoship order plus earn 2K Treats points
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Fluval Master Test Kit
Discounted Price $21.47 Old Price $42.99(0)SAVE 35% on your first Autoship order plus earn 2K Treats points
Sign In & Enjoy Free Shipping Over $49
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API® Phosphate Test Kit
Discounted Price $14.98 Old Price $14.99(0)SAVE 35% on your first Autoship order plus earn 2K Treats points
Sign In & Enjoy Free Shipping Over $49
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API® High Range pH Test Kit
Discounted Price $9.49 Old Price $9.99(0)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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Tetra® Quick Dip Aquarium Water Test Kit
Discounted Price $6.89 Old Price $18.99(46)SAVE 35% on your first Autoship order plus earn 2K Treats points
Sign In & Enjoy Free Shipping Over $49
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API® POND 5 IN 1 Pond Water Test Strips
Discounted Price $14.99 Old Price $19.99(2)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points
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API® Calcium Saltwater Aquarium Water Test Kit
Discounted Price $13.99 Old Price $16.99(0)Save $10 off $50+ with Free Same-Day Delivery
SAVE 35% on your first Autoship order plus earn 2K Treats points