HI,
never had a problem with CANNA ... 2 bottles for the cycle ...
+ Rhizotonic for departure.
The fertilizer manufacturer it's light: Example = Hesi or Bionova, often you must increase the dosage !!! More than that is written on the bottle ...
Even with CANNA (which is a very good manufacturer: not correction of Ph = amino-acids corrct alone the Ph) I were at 2.55 Ec in Bloom !
logically fertilizer coco or hydro is complete, there is no deficiency...
You can also use a fertilizer Hydro or coconut cultivation in soil = it works very well ...
fertilizers coco or hydro are very pure, easily assimilated by the plant. More easily than a fertilizer for the earth ...
I'll post 2 pictures of plants grown with CANNA Coco &
250w hps :
nothing more,
just to have an idea ! ! !
But this is réalized with
CANNA COCO ! ! !
HESI with coco or Bionova coco =
it was not possible !

Even by increasing the dosage much ...
I stayed 4 years and only CANNA Coco (and a little Bcuzz) was valid.....
(many manufacturing explains the "miracles" of their manure, but this is rarely true !
Few fertilizers coco or hydro are really powerfull ...)
Good week has you & Good continuation !
Respect,
Daz.