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Hello fellow experienced growers, is what I see on...
StonedWolfstarted grow question 6 years ago
Hello fellow experienced growers, is what I see on this leaf, combined with a reddening of leaf and main stems really signs of a CalMag deficency?
Or do I have another problem?
And is 1 ml CalMag Agent enough to counter it?
Dont wanna risk anything so close to the goal...
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CRiSPrGrowanswered grow question 6 years ago
Hey there you have the start of a P/K deficiency notably the K deficiency but it's very very light and probably won't be a problem. What you can do is cut out all the veg nutes that you shouldn't really have been using in the first place and start using only pk with the activera once or twice and you should see the situation improve . Hope this helps ! 🚀
Athosanswered grow question 6 years ago
Wow, those are some dark green leaves, go easy on the grow nutes, actually at this point you should stop feeding altogether. As for the water, tap water usually is high on pH. Your base water (before nutes) should have an EC/PPM of 0.5 / 250 PPM (or close to it), if it is lower you can add some cal / mag, 1 ml per liter should put RO water at that value or close enough. At this stage, decoloration of the leaves is normal since the plants is close to the end of its cycle
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