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Unique open rated lamp construction reduces radiant heat from the arc tube and is suitable for open fixture use with a PGZX18 base
SPIDER FARMER - G
people like to turn on their exhaust fans when either temp or humidity is too high
to make sure they are taken-up and used by plants efficiently
Potassium) 2-4-0
Hanna pH / EC / TDS / Temp Portable Meter - HI 9813-51 med Unique open rated lamp constructionThe HI9813 51 is an economical, water resistant, portable meter that measures pH, conductivity (EC), total dissolved solids (TDS) and temperature with a single probe. The meter operation is simplified with dedicated buttons for measurement modes to be displayed on the LCD and knobs for single point calibration of pH and EC TDS. The HI9813 51 has a variable EC to TDS conversion factor that automatically changes from 0. 56 to 0. 78 ppm = 1 S cm based on
US$ 24.99
US$ 139.50
US$ 239.50
