ok... the color temp is close... it would probably be fine. Unfortunately, an 8W T5 bulb isn't going to grow much of anything. Do you have a link to the bulb that made the claims you posted above? I can take a look at it.
The eclipse systems are difficult... not easily modified for FW
You could try some very low light plants... java moss will probably survive... maybe java ferns, or some anubias.
Careful when you go to get plants. A lot of LFSs sell plants that are not aquatic, even though they are marked as such. Like buying fish, you want to know the requirements of what you are getting BEFORE you get it home and in your tank.