FYI, I'm growing in Canna Coco presoaked in PH 6.0 water, watering once a day with ph 6.0 water.

There are no nutes in the coco, it is inert pretty much and will take on the ph properties of whatever you feed it. They say treat coco similar to hydro and I've been kind of been doing that following the guidelines at ICmag.

I don't know the EC of my water, I could move to distilled with calmag if needed though, I have both on hand.