I purchased the upgrade kit for my 12 gallon nano from nanotuners and I'll be getting 96w from
actinic blue bulbs, assuming I can solder properly.

I also ordered the PC retro kit with 13w that will hopefully still fit in the back chambers so I can maybe keep some chaeto and live rock chips in back, but I'm not sure if both will fit in my original hood, so I'll have to play with it a little. That kit also upgrades the heat shield and fans, so according to them it won't bump my temp. up, we'll see.
Kit Includes:
1 - Nanocustoms 4 x 24w Heat Shield
1 - Fulham Workhorse 3C - 48w
2 - BJB GX11 Lampholder prewired to Remote Ballast Lead
2 - BJB Bulb Clip
1 - AC Powercord
1 - Power Switch
1 - Bulb Clip
1 - Hole Plug
2 - Evercool 60x60x10mm Fans (Better than Stock)
I'd love to buy/trade a frag of that yellow coral when yours grows!
