I'm using exactly the same products, I'm mixing my coco 50/50 with perlite and when I started I didn't know much so wasn't giving any feed but I've recently read to mix nutes to about 600ppm straight off so I thought I'd go a bit slow just to be sure and started 3 more with around 450ppm by mixing 1.5ml of canna A and 1.5ml of canna B and 1.5ml of cal mag agent, don't quote me on this as different water will give different results I use tap water and it comes out about 140ppm. I've now upped my dosage to 2ml of canna A and B and the same for cal mag and this gives me around 650ppm, all these measurements are per 2 litres of water or 2000ml.
I'll post a link to my journal so you can take a look.