electronug
Active Member
even then cfls create quite a bit of heat when using larger wattage bulbs, hell my 20 watts gets hot fast. tin foil will just reflect these hot spots onto the plant, to much heat on one concentrated area simple will just burn the plant
Hotspots have nothing to do with the head produced by the bulb.
They're caused by light being concentrated and reflected -- think ants under a magnifying glass.