Grasscity.com Forums - View Single Post - space between lights and plants during flowering

motorheed · #3 (**permalink**) 05-07-2008, 02:13 PM

if its CFL lighting then 2-3" is fine ,very little heat off cfls.
if hid would depend on the wattage but say 250 watt =6+", 400 watt = 8+", 1000 watt 10+, this is a very rough guestimate but be close

#3 (permalink) 05-07-2008, 02:13 PM
motorheed Registered User Join Date: Apr 2007 Location: uk Posts: 904	if its CFL lighting then 2-3" is fine ,very little heat off cfls. if hid would depend on the wattage but say 250 watt =6+", 400 watt = 8+", 1000 watt 10+, this is a very rough guestimate but be close