TANGIE'S

Hi guys!! I know the pics are not so good hehe, it is not mold, maybe a fungus can make this, but...It is a burn!! I can clearly see the necrotic areas by looking the back side of leaves. The humidity is around 30-40%, so im thinking is a nute problem Im thinking about calcium, PH was around 6-6,5 until now, ill do an extra watering with calmag, adjusting ph to 7 just in case.

Sorry I have to impulsively agree with Psilodaddy… I know your not outdoor though so we can rule that out... I don't know if I would be all that concerned in your case... rub it.. see if moves or smells off it could be a mold or fungus... it if it comes off right way you got dust on your plant from somewhere in your house lol... If it's on the on the foliage... Not huge deal at this point of flower.. 4 weeks in stretch is done she is bulking.. Might be concerned if it continues to get worse fast.. But if it doesn't...

This appears to be a calcium deficiency in my opinion. It’s common to see this around mid flower as their need for Calcium increases. Looking good btw. Cheers 🍻

Looks like cal-mag to me as well the plant is near the end of the life cycle so she is using all the nutes left in the leaves 👍🏼 I guess your good and there is no need to worry

Are you using fabric planters? When I used them ONCE, I found that once they filled with roots the water leached through the sides of the planter long before it reached the bottom of the planter., so I wasn't getting nutes to all the roots. I had same spotsmgoing on. Once I doubled the the amount I watered and the nutrients actually made it to the bottom of the planters my new growth stopped showing those spot. I thought what a scam to get people to have to use even more nutes when they already rob us each time we buy them. Never ever used that fabric crap again and never had those problems anymore.