Skip to main content
Save 10% Off Today

Aquarium Freshwater Test Kits

Aquarium Freshwater Test Kits Products

Best Seller
More Choices Available

Tetra Tetra Easystrips 6-in-1 Aquarium Test Strips

$9.71 - $71.47
  • $121.99
  • Save $51 (41%)
FREE shipping over $49
Best Seller
More Choices Available

API API Freshwater Master Test Kit

$22.54 - $65.59
  • $38.99
  • Save $17 (42%)
FREE shipping over $49
Best Seller

API API Ammonia NH3/NH4+ Test Kit

$10.25
  • $16.99
  • Save $7 (40%)
FREE shipping over $49
More Choices Available

API API pH Test Kit for Freshwater Aquariums

$5.21 - $14.54
  • $23.99
  • Save $10 (39%)
FREE shipping over $49
Best Seller

API API Nitrate Test Kit for Fresh & Saltwater Aquariums

$10.75
  • $17.99
  • Save $7 (40%)
FREE shipping over $49
More Choices Available

API API Nitrite Test Kit for Fresh & Saltwater Aquariums

$7.68 - $21.43
  • $36.99
  • Save $16 (42%)
FREE shipping over $49
More Choices Available

API API Phosphate Test Kit for Fresh & Saltwater Aquariums

$12.50 - $34.88
  • $59.99
  • Save $25 (42%)
FREE shipping over $49
Best Seller
More Choices Available

Seachem Seachem Alert Series Alert Combo

$9.54 - $52.78
  • $78.99
  • Save $26 (33%)
FREE shipping over $49
More Choices Available

API API High Range pH Test Kit for Fresh & Saltwater Aquariums

$5.93 - $16.54
  • $26.99
  • Save $11 (39%)
FREE shipping over $49
Clearance
More Choices Available

Seachem Seachem pH Alert Sensor for Freshwater

$7.35 - $20.35
  • $29.99
  • Save $10 (32%)
FREE shipping over $49
Clearance
More Choices Available

Seachem Seachem One Year Combo Alert

$14.71 - $81.45
  • $128.99
  • Save $48 (37%)
FREE shipping over $49
More Choices Available

API API pH Test & Adjuster Kit for Freshwater Aquariums

$8.50 - $23.72
  • $37.99
  • Save $14 (38%)
FREE shipping over $49

Tetra Tetra EasyStrips Ammonia Aquarium Test Strips

$10.99
  • $17.99
  • Save $7 (39%)
FREE shipping over $49
More Choices Available

API API Copper (Cu+) Test Kit for Fresh & Saltwater Aquariums

$9.12 - $25.99
  • $44.99
  • Save $19 (42%)
FREE shipping over $49
More Choices Available

API API pH Aquarium Test Strips for Fresh & Saltwater Aquariums

$10.25 - $28.60
  • $48.99
  • Save $20 (42%)
FREE shipping over $49

API API Doc Wellfishs Replacement Test Tubes

$22.22
  • $37.99
  • Save $16 (42%)
FREE shipping over $49
More Choices Available

API API Ammonia Aquarium Test Strips for Fresh & Saltwater

$14.24 - $39.73
  • $63.99
  • Save $24 (38%)
FREE shipping over $49