yup, i'm gonna say it, I suggest using AN. They have a ph perfect coco line that works bvery well. I haven't ph'd my nutes in a few years now with no trouble. I've been running AN with coco for a long time. I've had my issues, and all of them were my fault. Lately I've been running a drain to waste feeding, 50% nutrient strength, with about a 25% runoff. my plants looks better than ever. The issue i am working on now is the flush at the end. takes about 2 weeks to get the plants flushed enough. I flush with Suagfr Daddy and the plants really like it. oh and you don't need all the shit An offers.
I run:
Veg
Sensi Coco Grow A&B
B52
AN"s Calmag extra
Sugar Daddy
Great White myco
Flower
Sensi coco Bloom A&B
B52
Big Bud Coco
Cal Mag Extra
Sugar Daddy
just Sugar Daddy and Flawless Finish for the last 2 weeks of flower. I give them one or two doses of Flawless Finish, that's it. the rest is just Sugar Daddy.
works very well and you don;t have to ph anything.