OK, my two plants are about a month and a bit old now, and the Blue Widow is growing depressingly slowly, while the Northern Lights is a bit bigger and has a few more branches, but has grown a whole load of yellow-white hairs, a couple of centimetres long. Is it flowering? If it is that's really annoying. Sound like a newb and all, but just really wanted to check with you guys.
flowering stage is when you start the light cycle 12/12 (light/dark) it sound like you may have caused the plant some stress. you may want to check your container might be to small that strain does not like its roots bounded or check ph