PurGro GroBot pH Probe, Industrial Replacement spl_hgc Choose from either Conductivity

Choose from either Conductivity

The S-line is a revolutionary series of fans that combine energy efficiency

making the new RAZR family ideally suited for full-cycle cultivation of leafy greens

Exclusive Lock & Seal Plug System

Terp Gerp is a revolutionary foliar spray for flowering plants

PurGro GroBot pH Probe, Industrial Replacement spl_hgc Choose from either ConductivityThese don't look like the ones from the hydro store because they are double junction, flat surface pH probes typically used in chemical plants for process control. They last longer, stay cleaner and are built to mount in line inside your GroBot Evolution. Cost a few bucks more, but these are the good ones. Proudly made in the USA.