yeah, those y splitters are awesome. its easiest way to double the number of lights. i would try to get a couple of those lights down around the sides of your plants. with cfls it seems like the best way to get your plants to fill out and not stretch as much is to try and surround them with light. oh, and i believe the mutli-armed lamp is typically called a medusa lamp if anybody cares to know. but overall your plants look really healthy!