White spots on leafs?

Looking at the photos and the grow diary, the situation doesn’t appear serious. The apical growth is healthy and actively developing, which means the plant is still functioning correctly. The damage is mainly visible on older leaves, which indicates a past stress event rather than an ongoing systemic problem. The key factor here is the transition from indoor to outdoor conditions. Natural sunlight is significantly more intense and broader in spectrum compared to LED lighting. Without a proper acclimation phase (hardening off), it is common to see signs of light stress such as bleaching on leaf tips, localized tissue damage, and increased transpiration on the most exposed leaves. There may also be a mild nutrient uptake imbalance, particularly involving calcium and magnesium, or possibly phosphorus (slight purple stems can suggest this). However, in this case it looks more like a secondary effect of stress rather than a primary deficiency. The use of fermented inputs and sugars may have temporarily altered the rhizosphere environment (microbial activity and nutrient availability), but without precise data it’s not possible to draw a firm conclusion. The most important point is that the new growth is clean and healthy. This indicates the plant has already recovered from the initial stress phase. At this stage, the focus should be on: – maintaining stable soil moisture (no overwatering or drought stress) – avoiding additional stress factors (especially thermal and water stress) – preventing overfeeding or unstructured input mixes For summer conditions, soil cultivation is often the most stable option if you don’t have a chiller system. In hydroponics, nutrient solution temperatures can rise too much and create serious root-zone issues. In short: this was a light and transition stress event (indoor → full sun exposure), but the plant has already adapted. Now the priority is stability and consistency.