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The people I know who run autos exclusively tell me that they feed cal-mag at every water. I have read that many of the most powerful strains typically have hollow stems that will need some support when they get heavy with bud. I have 2 C-4 photos that are beginning to get heavy growth and the branches are breaking. On one of the branches I could clearly see it was like a straw. I just recently trussed them all and it looks like a mutant spider has spun webs all over them. If your plants aren't showing any ill effects from your feeding schedule then I would suggest keep doing what your doing.
A lot of the autos I do act a bit more calmag hungry than photos typically. My auto NL crosses are calmag hogs, straight up hogs. They seem to want more than any other plant I've ever grown. Don't start adding it early enough or forget to add it a few times and it's brown city before you know it.
I've noticed the same, unfortunately I screwed up this last time and bought AN's Sensi Cal-Mag Xtra and it's 4-0-0 so I have to try to balance the N which is a pain.
You Americans with those tablespoons 😅
I don’t know how much is a tablespoon in ml actually.
But it’s a lot lower than I’m using in my 6 liter bottles I feel
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