Grower’s Choice Horti-Tech LED 420 (ROI-E420) Hanna Instruments Over range and under range

Over range and under range indicators

Best PracticesShake well before use

Calibrate pH and EC with a single Quick Cal solution

High initial light intensity and consistent spectral output

Spectral distribution is optimized for photosynthetic efficiency

Grower’s Choice Horti-Tech LED 420 (ROI-E420) Hanna Instruments Over range and under rangeWhat do you get when you take two of the top lighting manufacturers and innovators in the industry and put their heads together to create a new LED? You get the Growers Choice Horti Tech LED. An inspired collaboration between two of the most respected lighting companies in the horticulture industry, TSL Horti Tech and Growers Choice have joined forces with their years of innovative experience to create this high performance and cost effective lighting