Here's the grow rack I got for Christmas. I finally assembled it today. There's also a plastic cover that goes over it. This thing was really a pretty good bargain if it holds up. It's made of metal and plastic and even though there were no assembly instructions, it was pretty easy to figure out. Here's my question - how do I know when it's safe to put my seedlings outside in this thing? The plastic cover zips up so I'm assuming it gets pretty warm in there but how warm do you think it gets inside during the daytime? I'd really love to get my seedlings out of the basement so that I can start more stuff but if they died I'd just die.