Ya bud, I try to soak up all I can get thanks. I use autocobs and they apparently make you use more calmag on top of anything else. I dont know how or why but that's what I'm finding out. Thanks for the help!All I can say is it has worked for me. Promix won't need as much calmag as coco. I have been using GH Floranova bloom and haven't used any calmag. When I did a hempy bucket with straight perlite recently I had some deficiencies with just using the floranova and had to pickup some calmag. I hope some of this at least helps point you in the right direction.