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S4 Spectrum: Provides highly efficient full spectrum with a healthy red-to-blue ratio to drive photosynthesis
Features an IEC power connection and comes with a 8' 240V 16/3 AWG power cord with NEMA 6-15P plug
Increases resin production/essential oils
Foams less than regular formula and tweaked ever so slightly to behave more appropriately for the hydroponics reservoir environment
Oakton 1413 microsiemens/cm Conductivity Standard Solution, 500 ml water-filtration S4 Spectrum: Provides highly efficientStandards have KCl, NaCl and 442 conversions printed on the bottle for ease of use. Temperature corrections are printed on the bottle, with the certified values listed in the tables, accurate to within 0. 5% and are referenced to 25C.
