Ignitor, Sodium, 250/400W soil Measurement can be displayed with

Measurement can be displayed with tabulated data or as a graph

Roots Organics Extreme Serene kelp extract can be used in conjunction with any potting soil or hydroponic nutrient program

rock meal and trace elements

The graphite conductivity electrode provides greater accuracy because it resists contamination by salt deposits in the sample

SUNMASTER 600W FULL NOVA

Ignitor, Sodium, 250/400W soil Measurement can be displayed with250 400 watt Sodium Ignitor (all ballasts) Ignitors are components inside ballasts. They take power off the transformer and use it to strike the bulb inside the reflector. Replacement ignitors are available in a variety of wattages, brands, and types. Be sure to review item numbers and descriptions carefully before ordering. Contact your Hydrofarm sales representative for help selecting the proper components.