Hey! Moved to Oregon and started growing this season: one Marion Berry Kush indica hybrid about three months old on the vegetative state. I fed it call/mag as directed every watering, kelp as directed once every 7 - 14 days, maxigro as directed every third watering. It's in a ocean forest soul. I make sure that all feedings are between 6.5 and 7pH. Three weeks ago I started noticing that the older leaves were turning yellow and withering at the tips. Up to this point is when I watered to always be at 6.5pH. After I noticed the leaves turning yellow I tested the soil pH and it was at 5.5. I increased the pH on the feedings to 7pH since. The plant, overall looks healthy. It's growing still. Since I'm new to this and it's started three weeks ago I'm really concerned. Please help!