HM Digital Hydromaster Portable - pH/TDS/EC/Temp b-light Features 2 growing rooms to

Features 2 growing rooms to offer continuous growing

Beats the competition in every way

the GX400 is a staple in every garden

Includes Mesh screen only

HM Digital Hydromaster Portable - pH/TDS/EC/Temp b-light Features 2 growing rooms toHM 200: Portable pH EC TDS Temp Monitor The HM 200 is a versatile portable pH EC TDS Temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more. Features Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS),