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You don't hear them
and relative humidity
Experience ease and simplicity in taking pH
A matching pin/ground probe can be connected to the appropriate terminals to extend electrode life and eliminate interference
Active Air 16" Wall Mount Fan spl_nextlight You don't hear themThis easy to mount unit has 3 speed settings and oscillates 90 degrees to give you ultimate control of air flow in your area. It has two pull chains that allow for easy adjustments of speed or direction, and operates very quietly. Features Helps grow healthy plants Prevents stratification of grow room air Smooth and quiet operation 90 oscillating action Three speed settings Two pull chains to operate speed and oscillation Easy wall mount 6' power cord
US$ 139.23
US$ 177.97
US$ 280.00
US$ 338.98
