MistaOCanswered grow question 1mo ago I can identify two clear issues in your picture. First, the curled leaf tips are a protective response of the plant to excessive heat, so it’s likely too warm for it. Second, the spots indicate a calcium deficiency. You should address this as soon as possible, as the problem will continue to spread if left untreated.
Calcium deficiency can be caused either by insufficient calcium supply or by an incorrect pH level in your watering solution. If you’re confident that your pH is within the optimal range of 6.0 to 6.5, you should consider adding a CalMag product to your nutrient mix. If possible, also try to lower the temperature slightly.