How much canna mono magnesium?
Every grow now I'm having the same deficiencies about week 4 which I think could be magnesium related.
I've ordered a water test kit from growers ark but it hasn't arrived yet.
My water authority website gives the following figures for my water:
Ca 58.6
Mg 8.55
I've uploaded the rest of the figures. Going from ph and ec they aren't too far off.
Can anyone tell me how much canna mg mono I should be adding
If you have an ec meter, I would just add calmag to 0.4-0.5ec, then your nutes. You need about 150-180mg calcium and 50-60mg magnesium. Presoak coco in 1.5ish calmag overnight or about 6 hours. For treating mag deficiency only, to fine tune later in the grow, dissolve 250g of Epsom in 1L and add 1ml to each litre of nutes to add another 32mg or so of magnesium.