You're not alone Catatafish.
I'm thinking a out using RO or Distilled water as I've heard the Coco A and B contains enough calcium/magnesium but I'm not sure.
I felt left out of the FL crew thread going on here....
Glad to know im not teh only one with shitty 300pm high ph water.
So the older gals are bouncing back now that I've been feeding at pH of 6.0...some pics...
View Image
View Image
View Image
Should have some good roots on the cuttings in the next two to three days.
Now the waiting game will be played while they veg out and we'll see if my problems I was having with the bigger/older plants that were/are in GH coco that came from bricks were just because of poor coco etc.