Are you going to be using any actinic support or is this going to be the primary bulb for this tank? The XM 15K bulbs have not gotten very good reviews for their PAR rating. Haven't heard anything on the Ushio 14K either. If this is going on a nano tank it I doubt that PAR rating is going to be an issue though.

Below is another option if you want to try their 14K DE bulb and it's only $48. I've had good experience with the EVC Tech ballasts but haven't used the bulbs myself though. They have other 150 watt DE bulbs also along with many other places.

http://oceanencounter.com/Merchant2/...ategory_Code=D