Cool idea....might do this to mine as I have two of those hoods across my 55g tank.
When you wired in the sockets did you tie them into the on/off switch built in the hood or did you just hard wire them straight into the plugin cord?
I use a timer for my lights so I was thinking I could just hard wire straight into the cord and not worry with the switch.
My tank isnt planted (for now anyway) but I would like having some different light combinations to brighten the tank up some since the 17w bulbs dont do alot.And if later down the road I decide to add live plants then lighting wouldnt be a big issue.
I've done it both ways. On my 150 I wired them with a switch, even though they're on a timer. On the 55 I wired them all hard-wired without a switch...they'll always be on a timer anyway so I didn't see the need to spend extra money on a few switches if I was never going to use them.