Bev that's a great idea! Never thought of doing that!!
JC the reason I brought up about the sun is that it could be one of the factors in why the plants aren't opening up. I have noticed it can be pretty individual as to how each specific clone reacts to things! Also if its warming up, don't forget to water, if your plants are growing then they would like regular watering, just not too much at a time! (my 2 cents!)