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Brown spots on one plant
novice_nugsstarted grow question 4 years ago
One of my northern lights plants has this on some leaves is it a calcium deficiency i added 2ml cal mag per gallon my ph is good not sure why it hasn't gone away mabey more cal mag ?
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OutForRealanswered grow question 4 years ago
On the bottle of Tiger Bloom you can't read Calcium listed in the components list , but under the list just after the less concentrate nutrient aka Zinc 0.05% you can red " Derived from : Calcium Nitrate , ect" . On the bottle the components are listed from the most present to the less present and the nutrients that are not listed with a % are just traces so here you have trace of Calcium Nitrate which means you have NO SUBTENTIAL AMOUNT OF CALCIUM in that bottle 😋
Aslo calcium def is looking like manganese def but calcium excess is different as there is NO rust spot when it is an excess of calcium. Here is a link to see by yourself : https://www.loudclouds.co/plant-nutrient-deficiency-chart/ 😎
Now take a look to the Big Bloom bottle , turn it back and look at the components list , here again no sign of calcium , and please search for Ca3(PO4)2 because it is the Tricalcium Phosphate formula and the Big Bloom is FREE FROM THAT SHIT , no traces of it inside , not even a drop 😒
Now you know that you need to double check any advices to be sure of what you'll do
DeadwebsiteBoringcommunityanswered grow question 4 years ago
Your tiger bloom also has Calcium in it.
http://sunlightsupply.s3.amazonaws.com/documents/product/718520_SDS.pdf
If you catch the train of the thought please read into it. Excesses of calcium can look like a Manganese def. With all those Organic Nutrients you've been feeding we guarantee you do not have a case of not enough anything.
The reason we are saying excess is the Dark green Foliage.
https://www.alchimiaweb.com/blogen/deficiency-excess-calcium-in-cannabis-plants/
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OutForRealanswered grow question 4 years ago
Looks like a cal mag issue to me too , only manganese can do that kind of rust spots when it's not a calcium issue but I'm doubting taht it's what you are expecting right now. The 6.5 ph is bad if you are growing soiless prefer a 5.8 ph which is the sweet spot and try not to get above 6.2ph , the ph fluctuation would have burnt the leaves differently if it has been the issue but it could have create a lockout so the calcium is no more absorbed by the plant. Also you have a dark green foliage , maybe a N excess but nothing harmfull
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DeadwebsiteBoringcommunityanswered grow question 4 years ago
Stop feeding Cal-Mag.. Your problem is actually the opposite of Calcium def. You have an Excess of Calcium. One of the Main ingredients in Big Bloom from Fox Farms is Tricalcium Phosphate. Judging By your listing nutrient ratios this is your problem. You are actually seeing an overdose of Calcium and should not feed so much Big Bloom in the future. Using Big Bloom as a high nutrient support but not a "flower booster".. The Bloom boosting formula usually only requires p-k because if you already feeding a trio Formula the added micro nutrients coming in from the Supplement need to be taken into account.
http://sunlightsupply.s3.amazonaws.com/documents/product/718520_SDS.pdf
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ElevatedNoobanswered grow question 4 years ago
Hey Novice. I don't think that type of leaf damage will repair even if treated correctly. What you're looking for is to stop the spread and worsening. Hope this helps. Happy growing ✌️👊
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