Apera GroStar GS4 pH/EC Combo Pen HGC741608 A built-in check valve assures

A built-in check valve assures that all the drippers will turn on – when the system is fully pressurized – and off at the same time

the Anden 710 with VLGR delivers the best return on investment when compared to competitive dehumidifiers

It’s the perfect medium for cultivating plants

It is not a fertilizer

9 pints per kWh

Apera GroStar GS4 pH/EC Combo Pen HGC741608 A built-in check valve assuresAI21040 GroStar GS4 pH EC 500ppm 700ppm & Temp (5 in 1) Combo Pen Lab grade instruments designed specifically for growers! Includes: 2 year warranty (instrument) 1 year warranty (probe) pH 7 & pH4 calibration solution (50ml bottle each) 2. 77 EC calibration solution (50ml bottle) KCL storage solution (10ml bottle) Lanyard and user manual Features: Measures pH, conductivity (EC and 500ppm 700ppm) and temperature (5 in 1) Compatible with all GroStar