Bluelab pH Pen Telos LED It’s the first and only

It’s the first and only LED 1:1 replacement for HPS in the industry

It's supplied pre-rinsed and buffered

delivering all of the nutrients that are essential to plant growth

or the 600W Boost setting may be selected to give maximum light output

Raw B-Vitamin can be used at all times of growth and bloom and is a beneficial supplement to all feeding schedules

Bluelab pH Pen Telos LED It’s the first and onlyThe Bluelab pH Pen is a great little hand held device for measuring the acidity alkalinity of your nutrient solution. Bluelab products are trusted by growers across the globe for their accuracy and reliability the handy new pH Pen is no exception! With temperature compensation, it provides highly accurate readings, as well as displaying the temperature of your nutrient solution onscreen