Neptune PH/ORP Module- PM1 Major Elements 78-100 separate tests within that

78-100 separate tests within that range

Rinse bag under running water for 5 to 10 seconds

Ideal for taking videos and photos of your corals all while floating on the surface

Chlorine - Water and charge balance

as long as salinity is maintained at the desired level

Neptune PH/ORP Module- PM1 Major Elements 78-100 separate tests within thatPH ORP MODULE PM1 The PM1 probe module is just what you need if you want to monitor pH or ORP in your tank. And, there is an added bonus, you get an extra temperature port as well as six I O switch inputs. This module is perfect for someone that wants to add an additional pH or ORP port to their Apex System.