The roots were exposed before I flushed. I left them exposed the most of flower stage.

Im not sure, it's my first grow. I read so much about flush and no flush. It seems the best thing to do is flush since everybody says thats the way to get good tast. At the same time, it doesn't make sense to deprive the plant of nutrients when it needs it most. So im trying both. As far as your outside grow, it looks like you need bud fillers. I use these:

I follow the fox farm schedual.