Lock channel with spring wire
The #1 selling filter in gardening and hydroponics for 10+ years
Apply as a foliar spray to improve crop resistance to stress
ISO9001:2015 Certified Manufacturer of 30+ years
resulting in plenty of lush green foliage
HM Digital Hydromaster 100 - Continuous pH/TDS/EC/Temp meter fans-ventilation-ducting Lock channel with spring wireDescription HM 100: Continuous pH EC TDS Temp Monitor The HM 100 is a pH EC TDS Temp monitor ideal for all water quality testing, hydroponics, water purification applications, wastewater regulation, aquaculture, colloidal silver, labs and scientific testing, pools and spas, ecology testing, boilers and cooling towers, water treatment and more. Features Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS),