Bluelab pH Pen tent accessory such as tomato plants

such as tomato plants

A good root system results in healthy vascular tissue formation

containing organically chelated micronutrients and natural plant growth hormones

You can use it for wet or dry trims thanks to the wide variety of blades

Grow Proud

Bluelab pH Pen tent accessory such as tomato plantsBluelab pH Pen This user friendly and hardy handheld pen will take measurements in increments of 0. 1 pH and is fully temperature compensated, so you can expect accurate readings every time. Bluelabs products are designed and built for grower environments not the lab so you can relax knowing that your pen can withstand the knocks, drops and deep water plunges that come with everyday growing. The fully waterproof Bluelab pH Pen is designed to float