As long as it gets the job done then w.e
Main thing with my set up is that it gets kind of annoying with the tubs that are stacked on one another, and all the wires. But as far as temps and all that it I'm fine. What I DO like about this shelving system is that if you using a dimmer like I am the ventilated shelves really help keep the heat build up at bay. I currently use a dimmer, and a thermostat because I have two types of UTH's at the moment. I have the thermostat working the flexwatt, and the dimmer working the zoomed's. Still would love to see some more "ghetto" setups keep em comin if you got one!!