GroLine pH/EC/TDS Multiparameter Probe (Inline) coco-cubes Rugged and durable

Rugged and durable

Records high and low CO2 levels

Prevents stratification of grow room air

The unit is quiet because it doesn't require a noisy compressor to function

They’re really RAWesome

GroLine pH/EC/TDS Multiparameter Probe (Inline) coco-cubes Rugged and durableThe HI1285 9 inline multiparameter probe measures pH, EC TDS, and temperature in one convenient, rugged probe. Use with the HI981421 GroLine Monitor to provide around the clock, continuous monitoring of pH, conductivity (EC & TDS), and temperature in hydroponic nutrient solutions. In line pH, EC, & TDS probe with exclusive PTFE non clogging membrane. Built in temperature sensor ensures fast, accurately compensated readings even during sudden