I do it.4 4ft 40w t12s vegging & add 6 cfls for flowering.i cant post links w/my phone,but you can search chernobyl/indoor growing. I got nice fairly dense buds.some big ones too.people say u cant get big,dense buds-but my plants prove you can!just try it,change it up if it dont work.all my lights,fans&heater runs 20$ month in cali. For 3.5 oz dry.worx for me!!!