I am a first-time grower. My plants are just a little over a month old. A few days ago, I started to notice some yellowing and brown spots on the lower leaves that has started to move to the top of the plant at the very tips of the new growth leaves. I did transplant the plants into a larger container 4 days ago.
Soil is Happy Frog potting soil. Soil PH shows 5-5.5
Using distilled water PH 7
Lighting is Vander 2000 watt led 24 inches above the top of the plants.
3X3 grow tent
Temp 76 degrees
Humidity 64 percent
With a Vivohome 188 cfm exhaust fan and carbon filter
Any help or suggestion would be appreciated.