Yes calcium deficiency. May be caused by lockout rather than not having enough. Your tips look a bit burned so maybe overfed some and it's locking the calcium out.
Make sure pH is correct and if not already i'd give em some calmag.
Check run off and flush if necessary
Hope this helps
Hi. Ich freue mich immer Grows aus Deutschland zu sehen. 👍 Ich bin hier um dir ein Abo und ein paar Likes zu hinterlassen. Wir müssen doch zusammenhalten.
Viel Erfolg und maximale Ernte wünsche ich. Legalize it! 💪😎
Nice yield mate, well done 💪 usually dry weight is about 18-25% of the wet weight depending on how well you trim and the type of bud structure😊 Enjoy your harvest!