I am going to start growing as soon as I get all the suplies.From what I have read on this fourm the dripper should be located on the outer edge of the rockwool? Also the timer for the dripper should be on for 15 min every 2-3 hours? And cover the rockwoll and base of plant with dark hard plastic to prevent mold? Is that all true? Also what parts and must haves do I need for the dripper system? Any other tips?