No plants are ugly - its you :P - I told you, you didn't pretend to be a female. Funny, we registered within a week of each other - I guess we gotta stick together!

You want the lights as close as you can without burning them. CFL cooltube is kind of overkill, no need for that kind of cooling with cfls. My cfls are within 2 inches of my plants. Now if shes under that 400W HPS, its a whole different game. 400W in that cab s going to be tough without some serious cooling...

Only trim the leaves that are damaged/dead - I wouldn't trim any of those just yet. I dunno if thats heat stress per se, but definitely something made those top leaves unhappy. Looks like something is eating them kind of.

Shes gaining in size nicely, so whatevers going on can't be TOO too bad ya know?

Have you fed them yet? Any bug problems in the house? get a no-pest strip and throw it in the cabinet when you can, help eliminate the bugs (if there are any).

Dunno what to say man, its so hard without seeing 'em sometimes. What kind of ambient temperatures are you getting inside the cabinet - there are 2 temps you should be concerned about. With the thermometer in the direct light, it can get as high as 100+ and be ok, but in the shade in the cab, it should be below 80. Check your temps and lets see if we can get this baby on track