Well I guess no one is very interested, but here's a picture anyways. The plant it growing well now, had to move the light up a few inches, and added some more ferts.
Looks a lot better now and adding on a few new leaves. Just watch the water, adjust the pH when needed and you should be ok. Also I'd put a cover or something over the rockwool thats being hit by your light. That will help you prevent algae from growing on your Cube if it's wet.