temps during vegging

okay i cureently have 5 white widow seedlings with a 2ft 4 tube t-5 set-up over them 24hrs straight. i will have them like this for the next two weeks until i get a 600wattmh light for them. now while they are under the t-5 what should my temps and humidty level be? ord does it not really matter becasue the t-5's dont emit alot of heat? when i get the 600watt system i wll go on a schedule of 18/6 what will i need my temps/humidity to be then? what does it have to be during the dark period of the grow?

u want the temps at or around 76F for optimal growth throughout plant life for optimal growth, when the lights are on. U want a good 10degree drop in temps at 'night'

IMO, mid 70's-lower 80's veg (24 hours)
I've recently read that night drops of 15 degrees are good?
Tropical strains like humidity, mountain strains, not as much?
>50% during flowering.

Flowering plants do fine a bit cooler, as in nature they'd be exposed to same.

imo 72-76f at lights on 74-78f lights off having the temps slightly higher at lights off produces denser plants, dont ask me why cos i cant figure out why it works just accidentaly came across it. during veg i keep humidity constant 60% in veg then flowering between 35-45%

thanks for the input,