lmao well no shit you had problem, that is ridiculous.. you cant have an HPS in a small place like that.. plus, you dont need an HPS to Veg like in his question.
Metal cabs are fine, just have ventilation and use CFL's and you'll be fine..
Bubblegum is one of the stinkiest straisn ive ever grown. One time i have a fungus gnat problem and all of them went on the Bugglegum because they know its sweet and smelly
GIVE THEM BLOOD MEAL, take off all of the fucked up leaves, including the yellow ones. Dig up about an inch of soil from the pot, add 2 tablespoons of blood meal (if they have a good root system), mix repack and water.. wait a few days to see them come greener