I want to learn more about it in case any of the others get a difishency. I do use cal mag and silicon. The og kush will be come in down next week [emoji106][emoji106][emoji106][emoji12][emoji41] I'm glad as I need the space 3 of the ultimates are big plants almost 2 meter and the bud is like stones but 1 out of the 3 has different bud formation. It looks like a different strain ( it is auto ultimate it came in the same pack as the others ) not that there's anything wrong with it its very healthy