ok thanks Sam, Do you have an idea on the time it takes to spread when its just one clump? and how long it takes to spread in several clumps? because if its a big difference i will get some more clumps. I have not seen noticable growth in the 2 weeks ive had it. I have 1.62 wpg which is on 10 hours a day. traces everyday, (im getting macro-nutrients this week) and excel everyday. Thanks