Choose the 5-Stage Filter 2-Pack if:

The Milwaukee PRO pH / ORP controller offers:

Calibrate before first use

Improved flow rate – Faster filtration than standard pitcher filters

Milwaukee M10004B pH 4

HM Digital SAL-1700 Aquarium Salinity Meter - SG/PPT/PSU/Temp for Saltwater Reef Tanks RO filter timer Choose the 5-Stage Filter 2-PackProfessional 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