Hee, just had a set of T5s delivered as a present for myself! OK, actually I want it, but making it a present takes off some of the squeeze. These are 6500K lamps, and will be tentatively installed in my room as a plant-shipment holder. I get my plants sent back, someone unpacks at home and puts under the lights, with a soil-less medium that I experimented with a few months ago. I'll pot them up and acclimatise to full sunlight when I get back home. After that, the lights will be decomissioned from the room, and be used as LOVELY refugium lights! =) Yay yay yay, more seaweed in the tank!