Some suggest adding Cal Mag others suggest adding potassium!!! help to understand!???!!!!

hi this is a ph issue, in return you are getting lock out which show signs of a cal mag deficiency going on, so i would suggest this to fix, start doing a flush, flush until your run off ph is at a 6.0. then let the plant dry out for a day or 2 if not longer depending on the pot size. before you start feeding adgain you may want to grab some Epsom salts, this is magnesium in its pure form, mix 1 tbl spoon per gal of water and pour in to a spray bottle and spray the leaves on top and bottom, this will help the plant to receive the magnesium fast, now when you feed start your feed of nutrients at half of what you have been giving. add cal mag in to the food. check ph, water until you get a small amount of run off. after the first feed and if you do the spray you should see improvements with in 72 hours, the plant will bounce back and her color should start getting a healthy green look. last is some input, i would remove a few of the bigger leaves to open her up for light penetration as well as air that can move through the big bush you have going on there. by opening up the leaves you will improve air flow and by doing this you will also improve your bud sizes. hope this helps