Hi
newbie grower with a few grows under my belt
currently growing and auto blackberry kush from dutch passion, i'm currently on day 42. Lights 2 led pulling 250w power draw. Bio bizz light mix soil and Feeding biobizz nutes at half strength, grow bloom and alg a mic, with calmag at full strength, i've been thinkin i have a mg deficiency but not 100% sure. Temps are 23-26c and humidity is beween 40-50%. I'm not sure what is going on. I've grown this strain before and was alot easier before. I've attached photo's. Any input would be much appreciated
TIA
Welcome to Percys @lip85
It looks here as if you may have been feeding a little too much. Maybe a flush and a refeed at a lower EC would make the plant feel better 
@macky thanks, i will give it a shot. I've been thinkin i may have been over doin a little
Welcome to Percy’s @lip85. Good to have you here.
Just echoing the consensus, most likely too much feed. One thing that’s standing out is “full strength cal/mag”. We generally recommend max dose of 50% of the label recommendation. The manufacturer always wants you to use extra to sell you more. Excessive levels can cause problems like the ones you are seeing and others too.
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@monkeydo thank you, great to be on board. I appreciate the advice, the ec was up over 2.5-3, i gave it a flush and brought it down to 1.4. I will start feeding lightly once the pot dries out. You live and learn.
@lip85 so many variables to cause this. As l always advise people, go back to your FLOWERING CHECK LIST FOR - EC, PH, HUMIDITY, TEMP, WATERING PRACTISE, PEST CHECK - ARE THEY IN THE CORRECT PARAMETERS????
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Welcome @lip85!!! I will second what macky said, looks like an over feed issue, a good flush and dial it back a bit should get the girl back in line for you.
I agree with the others, looks like over feeding/some nute burn. A good flush should sort u out. good luck
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