what light would you use for this tent? 400w hps cooltube maybe?

I'm working from a dr 60 grow tent. basically this is twice the size of my dr 60 I'm doing a great job with my 250w hps. so I don't know weather to put 2x 250w hps in there or just settle for a 400w cooltube. ive been growing for 6 years now but any advice would be greatful. thank you for your time

I think if I use 2x250w hps I might run into heat problems...

I would say do the 400 cool tube, pull the heat out before it becomes an issue, cause you will heat up quick if it's not. MD

thank you for your advice MD, I was thinking the same. just wanted some feed back on it. 400 cooltube it is