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• Suitable for use with plants in the room
The 6”x6”x4” block from GROW
They are all natural and compostable
and natural potassium supplementation
Hanna GroLine Waterproof Portable pH/EC/TDS Combo Meter Double Ended • Suitable for use withDesigned to bring simplicity to nutrient testing, the HI9814 Portable GroLine Meter is designed specifically for Hydroponic growers. The specialized electrode combines 3 sensors in a single rugged probe featuring a polypropylene body, integrated temperature sensor, and cloth junction. One combined, pre amplified pH, EC, and TDS (ppm) probe for hassle free measurements. Quick CAL mode for a speedy, single point calibration for pH and EC with one