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Cal-mag deficiency late in flower

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PuravidaC

New member
I have what appears to be a pretty substantial cal-mag deficiency late in flower. Plants should be ready for harvest in 2 or 3 weeks. Should I limp to the finish line or give a cal-mag supplement this late in flower?
 

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No I'm not. It's my first auto grow and everything I read, except for the automechanics, said go slow with nutrients. I have given them 1/2 strength FFBB and FFTB twice but gave them stronger dose, plus cal-mag this afternoon. First auto grow and I have had more issues than any other grow, but on the plus side, I have also learned more on this grow!
 
Interesting, Potted. This is my first grow with new 315 LEC and I have kept it between 18" to 20" away. Santa brought me a LUX meter and when I tried it at 18", they were only getting around 40,000. If I held meter about 10" from light I would get around 70,000. Didn't want to get that close so I did move it about 12" to 14" away about one and a half weeks ago. May have to raise lights...
 
Yeah, been fighting high soil ph (low 7's) entire grow. Tried to bring down gradually without much success. Soil currently around 7. Will diffently be checking soil ph before I start next grow!
 
I am pretty sure this is a PK deficiency. Every new grower gets hit with this in late flower at some time. I am yet to get it perfect on the nutrients in 5 tries.
The 1/2 nutes schedule was too weak and in am at about 3/4 nutrients now (compared to GH feed chart). Also, whatever line of nutrients you use has an PK booster and it works (no matter what nute company).
I am using the full line of GH now and am hoping the next grow is healthy. wire to wire.
 
My past photo grows have been a breeze. Everyone has been faving about autos and how simple they are to grow so I thought I would give them a try. Also wanted some diversity since I have been growing and smoking the same strain for over two years! 😁 Some here say that's why the use kind soil for autos but it seems a little pricey for me...
 
Gave em a dose yesterday. Only got about 2 or 3 weeks to go before harvest. Will give more until ready for flush. Thanks Green! How far away to you keep your 315's?
 
Yeah, these autos have been a challenge. I only have 2 or 3 weeks before harvest. All my other grows have been a breeze so this grow has been educational! I have more gorilla glue auto seeds (this grow) and some six shooter auto seeds. Gonna grow six shooter next but if it doesn't go better I'm going back to photos! 😂
 
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