Datak states with their 300 watt ER-2000 bulb placed 12" above board 3 1/2 to 4 minutes for a small board, larger board sizes 5" X 5" and 9" X 9" raise light up to 15"
then turn on light for 15". Does anyone know this supplier as to quality? http://www.philmore-datak.com./ Best Kevin