Thanks for the advise and responses - sorry not to have listed Res. temp as well. - 27c or approx. 80f. I'm guessing it should be OK. I've put a 'normal' lamp in the box - will pick up a cfl tomorrow in case the new lamp doesn't arrive by Monday.

Any more advise will be helpful - looks like the lower leaves are getting some spots - but thorough checking reveals no bugs, parasites or other nasties on the plants. May be scaring from the leaves now touching and rubbing each other. Lower leaves started to get a little crispy, but still nicely green.

Waiting for light -

mrmcr2