Deficiencies?

I'd say a mix of tip burn and deficiency. Red stems /purple streaks on main stalk- mag Def. Lower leaves rust spots- cal Def I think light too close . Get calmag. Move light up Use lemon juice or something acidic in your house for pH down. Flush n feed prop. What's your run off What EC you feeding at. Your light may be small for tent size. Is plant directly under worse.

Hi there! If burnt leaf tips predominantly occur in the upper part of the plant, it usually indicates nutrient burn. In the second-to-last picture of your current week, you can see that the burnt leaf tips are curling up a bit. That's also a sign of too much fertilizer. If the leaf tips turn light but don't burn and don't curl up, it could also be stress from the light. And where more of the leaf surfaces are affected, it could very well be a slight phosphorus deficiency. Or it could also be a pH problem in the soil. The brown spots might indicate a calcium deficiency. In the second-to-last picture here in your question, it could be magnesium deficiency. Magnesium deficiency and phosphorus deficiency look somewhat similar.