Primer cultivo fem (smooth smoke)

Hello my friend ! Just some advice : you are overwatering , this you can see from the "puffy" and the "wrinkled" space between the veins of the leafs. Fix this by following a strict wet dry cycle , this is very important for the soil health when you grow in soil. Second, I see you're using some clear plastic "pot" ... This is very dangerous my friend ! Basically the roots don't like light , if they have contact with light they get sick and if your roots are getting sick then your plant is getting sick ! Actually this is already starting ! Take some black tape or some duct tape and wrap the pot so no light goes in there . Simple solution ! Great work until now ! Hope this helps 🚀

Yes, excess calcium can cause serious problems. I would flush your plants with water equal to 3 times the size of your pots to restore the medium. If you're using a calcium/magnesium nutrient, I would stop doing that. If you're not using a specific calcium/magnesium nutrient, I would use less of any nutrient that has a high amount of calcium. There's also a lot of white powder on your leaves. Is it yours or did it just appear? I'm asking because it could be powdery mildew that will ruin your buds if you don't treat it. Make sure to address these issues before switching to 12/12 or it will affect your final yield.