We finally have decent weather in the Forecast, I'm going to start hardening off my plants tomorrow. This is the first year I grow plants from seeds. (On shelves with lights) I'm impressed with what I was able to accomplish. Do I just start them outside a few hours a day then bring them in at night? This is actually the first time i take them out of the room they grew in and away from lights. What's the hardening process, any advice at all would be appreciated.