im setting up a second grow and i wanna add reflectors to both but dont kno what to use. Im using 4 cfls and was thinking a cone reflector (like a lamp shade style) and Ive seen people say they use coke cans =S i dont really have access to any so was maybe thinking making a cardboard cone and using tin foil? Would this be ok to do?
Tin foil is a terrible reflector. Not only is it inefficient, but it can also cause hot spots on your plant. Maybe some cones wrapped in mylar would be a better choice. Also, a quick google of 'DIY CFL Reflector' might give you even more ideas. Good luck.