600w HPS and 400w HPS in the same reflector?

Hello,
I have a 1.2 sq.m. grow tent and one 60 X 60 cm air cooled hood and I am currently running a 600w HPS in there but want to add one 400w HPS witch I already have. I was gonna buy another air cooled hood but then it is no room for the blower or ducting in there so I was wondering if anyone knows if it is safe to put two HPS close together in the same hood?

Thanks in advance.

thats fine mate, but you will have more heat to deal with, if you can get around that then your laughing!!! imho

Thanks, man, Yes I think I can, I have a 160mm RVK blower and a cold room facing north. I'ts is already cold here In Iceland (hence the name lol) so I have to put a heater in there when lights are off

yeah thats fine