hey guys could you offer any ideas on energy efficient lights to keep neps indoors and on how many to use and how close, their larger plants and will get much larger so i need something bright that can be kept at some what of a distance. can regular florescentlights be used or do they have to be grow lights, reg. lights that i have found are much brighter. what about mercury hollogen, i believe thats it, can those be used? they are bright and fairely low watt.