HM Digital Pen style TDS/EC/Temp meter Perris Hydroponics Keep in mind that any

Keep in mind that any air that goes up into the light fitting and into the system will be unfiltered

Micro-elements fully round out plant nutrition

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Lightweight: only 9

HM Digital Pen style TDS/EC/Temp meter Perris Hydroponics Keep in mind that anyDescription COM 80: EC TDS HydroTester Series The COM 80 is easily the most advanced economically priced, reliable EC TDS meter on the market. With its versatility and durability, it is ideal for testing applications such as hydroponics and gardening, pools and spas, aquariums and reef tanks, water ionizers, drinking water and more. Features Measures electrical conductivity (EC), total dissolved solids (TDS). Excellent for nutrient testing Four