Have you considered a couple of 10 watt multi-chip LEDs? My DIY fixture consists of 3 rails of them in various colour temperatures. A 12 volt power supply on a timer & simple dimmer, you're good to go. I also added some LED strips to supplement the 10 watters. I have a couple of UV spectrum 10 watt multi chips as well (395-405 nm) but haven't installed them. I find the Royal Blues provide plenty of flourescence.
Since someone has already linked to auction site, here's another.
http://www.ebay.ca/itm/2pcs-10W-10-W...item35d3330698
The strips are available in 5 meter spools from offshore vendors for very low price, but you need to plan ahead due to shipping time.