Robertsanswered grow question 3 years ago If your soil ph is in range, it looks like light nitrogen deficiency or those leaves are not exposed to enough light. On very bottom they will naturally defoliate. I would double check your levels and if you are not flowering yet it needs a little more nitrogen. If the paleness is just In those bottom leaves I would not get super stressed. Good luck and happy growing 🌱🌱🌱