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where a 4 g packet would fall short
ensuring that the probes are exposed to a steady flow of water
Remember - keep your pH probe wet
ebb-and-flow
AC Infinity AIRLIFT S-Series Shutter Exhaust Ventilation Fan with Speed Controller Size:16 in where a 4 g packetAC Infinity AIRLIFT S Series shutter exhaust fan with speed control The AIRLIFT S Series exhausts heat, moisture, odor, and dust out of a room through a weather sealed shutter. Four sizes cover the range: 631 CFM at 10 inches, 830 at 12, 1513 at 14, and 2560 at 16. A PWM controlled EC motor pushes that airflow while holding noise and power down. Steel shutters close automatically when the fan stops, sealing out weather and pests. EC motor shutter fan
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