I’ve heard that method before, I was just worried about adding cal mag to the soil then nuts, I didn’t know if any of those minerals being added separately like that would lock out some out.I just put my first round of clones in coco over the past few days. I treated it like I do for seedlings. I've been using Royal Gold Tupur, so I probably don't need to do anything. That said. I flush it with ph-ed cal mag water. Then when transplanted, start with seedling level nutes, maybe dialed back just a lil. No issues so far (fingers crossed).