Bit of help please

[Biglee001]

Iv only just started using coco and was just wondering now there are on 12/12 do I just need pk13/14 I'm
Using canna a and b

 

[Dogwash]

have you tried canna website? they have got nute guides on there

 

[gr865]

Are you using the rest of the canna line, I us a&b, rhizotonic, cannazym and boost but I use GH KoolBloom 0-10-10 in place of p/k.
What rates are you using the nutes, I back off the A&B.

GR