Ammonia Gas Pressure Gauge, 160 PSI ventilation/air-conditioning Humboldt Roots was specifically designed

Humboldt Roots was specifically designed to expand the root zone

Battery life: >300 hours

Great for both potting soil and hydroponic gardening

all Active Air Fans feature:

CO2 Accuracy: +/- 50 PPM

Ammonia Gas Pressure Gauge, 160 PSI ventilation/air-conditioning Humboldt Roots was specifically designedZenport Zen Tek Instruments ammonia filled 0 160 psi pressure gauge is designed to measure pressures in systems charged with NH3 Ammonia. Constructed with a 2. 5 inch diameter stainless steel case and bezel, PC window and stainless steel 1 4 National Pipe Thread bottom connection the internal components and connections are all stainless steel and will not corrode. This quality gauge features grade A accuracy (1. 6%) and features a high visibility dial