It swung high for a bit. 7.2 ph was the highest and once I found out I flushed it immediately and got it back in range (6.3). The ph runoff always fluctuates a bit so I been changing what was going in from 5.8 to 5.5 ph.
If you look at the leaves you can see brown lines. I’m using coco coir with perlite. general organics go box nutrients. Ph going in 5.5. Ph coming out 6.3. Using 1000w led grow light. Temps 81 degrees and humidity 50%. Grow tent 2x4x5.5.