Brown spots on the edge of the leaves.. OG kush, regular plant, all mix, only bio-heaven, LST.

Slight burning from feeding too much or too often,.... or both. Remember, in soil it is a schedule of plain water/plain water/feed/plain water/plain water/feed.... so that they are only being fed every 10-14 days, which is plenty in soil, as soil "holds onto" nutrients quite well and the plant needs to use what is already there before any new nutrients are added. Give just plain water for the next 7-10 days before resuming feeding at the interval suggested and everything should be fine. A plant this size usually just needs half to three quarters strength nutrients too. Hope this helps, Organoman.

High Johnjah, This is over fertilization. If you use bottled nutes just stop giving them for a week and then start with 50% from what you gave. Make sure that the pH is in the right range (around 6.2 is perfect). Goodluck and Happy Growing! 😋

Nothing to do with rotten roots or too much water ... could be calcium deficiency, could be potassium deficiency, could be phosphorus, could be over-fertilization, certainly could be ph fluctuation, could be PH out of proper range - those are my ideas.... Without a diary, it's hard to tell. How about starting a diary for this lady so we have more to work with when trying to help you out?! Good luck...