yeah sorry i didnt read anymore of the posts just the first one you put up the question that was at hand.. i seen canna start and plagron roots nothing else stated until further into the post.... plagron looks like is about the same as canna line for coco i checked out there website.. they want you to run a very high ec 1.5 from the very beginning imo thats a little warm.. i do usually hit with at least 1 ec in coco and only give them just enough water the first couple times walk the roots so it fills your container up then you can water until runoff.. i do let my ph fluctuate from 5.5-5.9.. i dont use r/0 water alot anymore when my tap comes out at .1-.2 ec so its even lower than yours... i dont add calcium or magnesium when i am running a coco formula no need they have more added to the bases just for that reason..
compositionCocos A: Water, calcium nitrate, magnesium nitrate, potassium nitrate.
NPK-fertilizer (4-0-1). 3.9% Total nitrogen (N) of which 3.9% nitrate nitrogen (NO 3 ), 1% water-soluble potassium oxide (K 2 O), 4.5% of calcium (Ca).
Cocos B: Water, magnesiumulfaat, magnesium nitrate, mono-potassium phosphate, phosphoric acid.
NPK fertilizer (1-4-2). 1% Total nitrogen (N) including 1% nitrate nitrogen (NO 3 ), 4.1% of water-soluble phosphorus pentoxide (P 2 O 5 ), 2.4% water-soluble potassium oxide (K 2 O). Information for users USA, on heavy metals, please click here .
to me it looks like all that calcium and magnesium your adding is overkill and could potentially be locking things out its a coco formula it has plenty of calcium and magnesium in it if used correctly..
heres an image that help me determine issues when i started with coco i mean the chart can be for anything but it does help
noticing from this chart calcium and potassium are both needed to uptake magnesium.. you need nitrogen to keep the potassium and magnesium uptakes going strong...
so me personally with your replies to everyone id cut out the cal mag cause your ec of your water is already at .4 unless your gonna use r/0 water wich you could add back about .1-.2 ec of cal mag but honestly not needed from my experience.. and get your EC needed from your base nutrients your lacking your MAIN npk ratios.. i went through the same trials and errors like this... just my opinion but i believe you have a heavy water hand and your npk is out of wack.. i know i did not anymore though i give them what they need daily until the roots are expanded enough so i can add until runoff and come back in the next day and it need to be watered again