These are all northern berry from seed. They have been in veg for 15 days. All the older growth is getting these brown splotches. None of the new growth seems to be affected. If you know what this is and how to fix it, i would greatly appreciate the info. I have been growing for a few years now, and have several successful grows under my belt. I have never seen this before. I have also been noticing a significant ph fall over a 24 hour period over the past 4 days. About a point and a half over 24 hours. I set it at 5.8 and the next day it will be 4.3. I have no clue why this is happening as well. I am sure the 2 issues are related though. Like i said, any help here will be greatly appreciated Here are some pics.
sounds like you need to re-think your nutrient solution and figure out how to maintain a steady pH. as long as a hydro solution is within the proper pH range, contains all necessary macro and micro nutrients and in quantities that won't burn a plant, there should be no trouble.