In veg I feed total 1/1/1 in Rez
My tap water is very soft close to RO , very little stuff in it
Example , I use canna calmag agent ( high n in this calmag ) then I add my base feed which is a complete ( full of all elements iron zinc etc )
The high n in the calmag mixed with the 1/2/2 , creates/ makes my total in feed close to 1/1/1 , great for veg as it lacks nothing , nice balanced feed
If your total n in veg is high for too long say 4-6 weeks like in normal veg feed then a p and or k def shall show , 1/1/1 is what to get total close to
In stretch w1and w2 after switch to 12/12 , I use canna calmag ( high n ) and I add 1/1/1 , this makes close to 2/1/1 in total in feed , high n is good in stretch as n for stem and leaf and what is left over is stored in leafs as back up in flower
W3 when buds start to appear I switch feed to bloom
I use vitalink calmag , lower in n and mix 1/3/3 with it to stay / get close to 1/3/3
P and k for budding
In w5 I then top up Rez with pk , on top of w3/4 feed to make 1/4/4
At week 8 I want to lower p now too , as p and k is for budding and if I lower p then plant gets signal to stop budding and ripen and finish ( vita calmag and 1/2/6 plus lower ec ) as k is now on own plant will be forced / pushed to ripen as plant needs p and k togeater to make buds , so less foxtailing and finishes quicker