What? 8000K is fine for plants. Pretty much any non-actinic bulb will be fine for plants. There are 18000K bulbs that work fine for plants. Color temp of a bulb is NOT the same as spectrum.
You're going to be very limited on what will grow in the tank if you can get anything to grow at all. I would try to stick to java ferns, anubias, and moss species. Java moss will do fine at just about any light level.