Pay in 4 interest-free payments of $38.50 Learn more
Ships within 48 hours · Estimated delivery Jul 29 - Aug 3
Monitor and adjust the relative humidity of your indoor growth environment with the Anden A77 Digital Dehumidifier Control
Use in soilless mixes
if the Err5 still appears
3x plastic cups
60% Relative Humidity)
Apera GroStar GS4 pH/EC Combo Pen GAC Monitor and adjust the relativeAI21040 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