http://www.nano-reef.com/forums/inde...howtopic=74703
this should help you with some fish options. The biocube 29's are around 25 gallons so you can use that info accordingly.
the stock lights arn't so good for corals other than soft corals and zoa's and palys. but expect slower growth from them. when i had my sps temporarily under stock lighting they all browned out and didn't look very healthy. so if your planning on doing that the i would suggest upgrading your lights (downside: you loose the enclosed look)