Hi, I live in the UK and have a small collection of various Adeniums that have been growing fantastically whilst the weather has been good, they have developed thick caudex and branched off nicely but we have been overcast for quite a while and all the growth has stopped an I'm worrying they will go leggy. I don't really want to go 2000watt metal halide or anything but I was wondering if there would be an energy efficient lighting boost that I could get to bump the growth or put them into flower? I don't really know much about lighting house plants any help would be greatly received. Kindest regards Laurence