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What could this be? Deficiency, or pests?
GWSD82started grow question 4 years ago
White Crack in coco, currently late veg / pre-flower stage. Canna nutes being fed at EC 1.7 / pH 6.0 with runoff EC 1.3 / pH at 6.2. Noticed this on a single leaf this morning. Only change in last few days is that I am now filtering my water before mixing in nutes. Any thoughts?
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GMSgrowsanswered grow question 4 years ago
Yes my friend, you have been running at the top level of ph for soiless grows so the 6.2 in the runoff is actually set for taking more p and k not nitrogen. Get your ph down to 6 or under in your runoff. Just feed at 5.5 until your ph runoff drops and things will get better. When you switch to flower, and you see flowers forming, start your girls at 700 ppm 1.4 ec and 6.2 ph for early flower, mid flower 6.3 ph and 1.6 ec and for late flower back down to 1.2 or 1.4 ec. Cheers
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