This 3-pack combo provides everything you need for one full year:

The Milwaukee PRO pH / ORP controller offers:

Calibrate before first use

Alexapure’s obligation shall be limited solely to the refund of the purchase price or replacement of the product proven defective

Includes the Milwaukee MA911B/2 double junction

HM Digital SAL-1700 Aquarium Salinity Meter - SG/PPT/PSU/Temp for Saltwater Reef Tanks RO filter timer This 3-pack combo provides everythingProfessional Salinity Meter for Saltwater Aquariums & Reef Tanks The HM Digital SAL 1700 Aquarium Salinity Meter is the essential tool for maintaining optimal salinity levels in saltwater aquariums, reef tanks, and marine aquaculture. This professional grade digital meter measures salinity in multiple units (Specific Gravity, PPT, PSU) plus temperature, providing accurate, reliable readings to ensure the health and vitality of your fish, corals, and