Bluelab Conductivity EC Pen varo__120cm x 120cm Approximately 1 can per 28

Approximately 1 can per 28 g of material

Sprayers irrigate media from underneath

A wider conductivity range to suit your needs

offering three versatile lighting modes—full

Bluelab Conductivity EC Pen varo__120cm x 120cm Approximately 1 can per 28Introducing The Conductivity EC Pen By Bluelab The Bluelab EC or PPM Pen provides an accurate reading of the nutrient levels in your plant's solution and alerts you when adjustments are necessary. To ensure optimal plant nutrition, it's essential to have a high quality nutrient and measure the conductivity regularly. To avoid over diluting or over concentrating the solution, it's recommended to change the entire reservoir every 7 days and add