QUOTE(pyrocat @ Apr 6 2008, 04:40 PM)

Inside we want room for 2-3 plants, a 600w sodium lamp, and a 5" Ruck RK125 Inline Fan with a 50cm carbon filter.
my worrys are, heat and humidity problems.
Your worries are well founded Katie. A 600w light will be way too hot for a standard wardrobe (unless you fork out for
another RVK and a cool tube). I'd either go with a 250 hps or start looking at envirolites.
There are plenty of folks on here who have DIY drobes - do a search for "growdrobe" or "drobe" and see what you come across. Always best to learn form the mistakes of others
Peace