So I'm I have a NL auto in plant Magic soil, 3weeks looking good. I'm going to use Pm old timers organic bloom.. Pm schedule is suggesting 3-4 ml/l during the bloom cycle, I understand I should start off at 1/4 of that and work up to half.. So start at say 1ml/l and work up to 2ml/l, does that sound OK? When should I start with this? The shop was insistent I baught Canna PK, do I really need to use this, or will it make things to hot? If I did use the Canna PK, how much and when?