So glad to hear your back on track! With soil you get a nice buffer zone. Us guys in coco not as much. The ph on the runoff is higher many times because you are flushing some of the salts out that the plant didn't use. Usually the extra florabloom she didn't drink. This is totally fine. We like to think we are giving our girls exactly what they want all the time but really we line her up at a buffet and let her eat. Sometimes she just drinks the water and deposits those nutes right in the root zone. So we know that our ph and ppm climb on the run off. This means she is getting more nutes than she can drink to me. So if you see anything funny at this point it's not a deficiency. It's probably a ph problem due to the salts in the medium. Now if your ppm and or ph is lower on run off. She needs more nutes. She is drinking them up faster than giving em to her. And if stable run off you hit the sweet spot. That's where I let the ppm creep on runoff I was talking about. You watch it close first run (every strain diff feeding) and when you see the first signs of tip yellow or burn you know that's too hot. And then you can just push her to the max every run cause you know that she burns at a certain ppm at certain weeks. Your plants are looking really good man. Keep it up. Now that your not double feeding cal mag it probably freed up another 100-150 ppm you can use for more liquid kool bloom. Start with your 3/6 base and check ppm. Then add some liquid kool bloom to get where you want the ppms. Mine has been running 3/6/9 with no burn but I don't know what your cookies can handle. I picked up a pack of csi humboldt bubba girl cookies so when those finally take off I'll be able to have a lil more insight on how cookies grow.