yeah it is a great resource I love the book. I wrapped it up in a plain wrapper so I can read it when I am at Dr's n Stuff. I got it from the Mngr of the Collective I belong to. They loan books and stuff for free. I had to buy after borrowing for a week and kept reading. Great ideas to save a lot of head ache time and of course a season if on the outside. Check out Seemore Buds Video if you are thinking about Hydro. I am a soil guy it is free to let em sit in dirt but the extra 2 weeks is killing me.