Time to start shopping!
Water Quality Testers
sort by
Best Sellers
-
API® Freshwater Aquarium Master Test Kit
Discounted Price $24.59 Old Price $35.99$23.365% off Auto Ship
Save 20% off Your Order of $40 or More
Buy 1, Get the 2nd 50% off All API Fresh, Marine, & Pond Water Care
-
Tetra® 6 N 1 Aquarium Water Test Strips
Discounted Price $13.99 Old Price $29.99$13.295% off Auto Ship
Save 20% off Your Order of $40 or More
Save 30% On Your First Autoship Order!
-
2 Sizes
API® 5 in 1 Aquarium Test Strips
Discounted Price $5.79 - 10.59 Old Price $18.99 - 26.60$5.50 - 10.065% off Auto Ship
Save 20% off Your Order of $40 or More
Buy 1, Get the 2nd 50% off All API Fresh, Marine, & Pond Water Care
-
API® Aquarium Ammonia Test Strips
Discounted Price $14.29 Old Price $17.99$13.585% off Auto Ship
Save 20% off Your Order of $40 or More
Buy 1, Get the 2nd 50% off All API Fresh, Marine, & Pond Water Care
-
API® Pond Master Test Kit
Discounted Price $23.99 Old Price $37.99$22.795% off Auto Ship
Save 20% off Your Order of $40 or More
Buy 1, Get the 2nd 50% off All API Fresh, Marine, & Pond Water Care
-
Seachem® Alert Combo™ Aquarium pH & Ammonia Detector
Discounted Price $9.99 Old Price $16.99$9.495% off Auto Ship
Save 20% off Your Order of $40 or More
Save 5% On Your First Autoship Order
-
API® Aquarium Ammonia Test Kit
Discounted Price $12.99 Old Price $15.49$12.345% off Auto Ship
Save 20% off Your Order of $40 or More
Buy 1, Get the 2nd 50% off All API Fresh, Marine, & Pond Water Care
-
API® Perfect Start
Discounted Price $12.29 Old Price $17.49$11.685% off Auto Ship
Save 20% off Your Order of $40 or More
Buy 1, Get the 2nd 50% off All API Fresh, Marine, & Pond Water Care
-
Tetra® Quick Dip Aquarium Water Test Kit
Discounted Price $5.79 Old Price $17.49$5.505% off Auto Ship
Save 20% off Your Order of $40 or More
Sign In & Enjoy Free Shipping Over $49
-
Fluval® Aquarium CO2 Indicator Set
Discounted Price $10.99 Old Price $14.99
Save 20% off Your Order of $40 or More
Free Same-Day Delivery!
-
API® POND 5 IN 1 Pond Water Test Strips
Discounted Price $13.99 Old Price $18.14$13.295% off Auto Ship
Save 20% off Your Order of $40 or More
Buy 1, Get the 2nd 50% off All API Fresh, Marine, & Pond Water Care
-
API® Freshwater Aquarium Mini pH Test Kit
Discounted Price $6.59 Old Price $7.59$6.265% off Auto Ship
Save 20% off Your Order of $40 or More
Buy 1, Get the 2nd 50% off All API Fresh, Marine, & Pond Water Care
