3 weeks ago everything looked fine, now the plants look kinda stretched, the base stem is purplish on them all, all the way up near the top.... but the other stems off the base are green. They are also very skinny and have not grown much at all since i last saw them. however the leaves dont look to be in very bad shape.... they are just now starting to show sex....what has gone wrong? Is there a way to bring them out of this? As of right now they are about 2 feet tall maybe and so skinny i doubt they could support much weight ......it was all random bag seed so its not the same strain