Its the claw! Aside from that, f*****g nice one man...Jesus, I wish!
(And for the guy bitching about it not being enough light...because its vert and the lights are in the middle, you use 100% of the light...imagine the light given off by the bulb as a tangible bubble, in horizontal growing your only using one little side of that bubble, in this the plants grow into 100% of that bubble, so less watts necessary for more plants...just so you know!)