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FANS: For Air Circulation
Use small fans (eight or ten inches) so as not to produce excessive air currents; in large greenhouses use turbulator fans, suspended from the top. A63-392
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FANS: Proof of Their Efficacy
It has been proven under .many conditions; so, how did the Victorians get by without them? A81-810
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FANS: To Reduce Pests
Use furnace filters tied on the intake side of the fan to remove dust, some bacteria, fungus and pests. OIE85SeptT5; very likely more efficient than a negative ion generator. RMH
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FANS: To Run Continuously in a High Humidity Greenhouse
Suitable types can be purchased from the local electric supply house. A70-631; small fan heater controlled by time-clock can be used to boost morning temperature to 60 deg. F. for an hour or two. OR69-309
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FANS: When to Run, When to Shut Off?
Run them 24 hours usually; they are needed most at night. A70-798
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