Hanna Instruments GroChek pH/EC/TDS/C Portable Meter w/Cal Check co2 Roots Organics Extreme Serene kelp

Roots Organics Extreme Serene kelp extract can be used in conjunction with any potting soil or hydroponic nutrient program

560 ounces per gallon]

Effective on a wide variety of insects

(enter code SHIPFREE at checkout)

5 gal pail) which is available in two popular scents: Polar Crystal and Fresh Linen (not included with this item ON10056)

Hanna Instruments GroChek pH/EC/TDS/C Portable Meter w/Cal Check co2 Roots Organics Extreme Serene kelpHI 9813 6 is a versatile, water resistant, multiparameter portable instrument specifically designed for agricultural applications such as hydroponics, greenhouses, farming and nurseries. This meter features an large LCD that clearly displays the parameter being measured as well as calibration instructions. Calibration is fast and easy with knobs located on the front panel of the instrument. HI 9813 6 includes all the features of the HI 9813 5 while