Fast Buds - Indoor grow 3

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.

Your not suppose to giz on them dude

Thanks — yellowish-brown spots on the edges of leaves plus upward curling are classic symptoms of a few possible issues. Based on your setup, here's a breakdown of likely causes: --- Most Likely Causes: 1. pH-Related Nutrient Lockout With pH at 5.6 in soil, calcium, magnesium, and potassium uptake is severely limited. This leads to rust-like spots, leaf edge damage, and curling. Solution: Immediately adjust your feed/water to pH 6.3–6.5. Do a light flush with properly pH’d water to help reset the root zone. 2. Potassium Deficiency Shows as brown/yellow scorching along the leaf edges. Also causes upward curling, brittle leaves. Often due to either pH lockout or overfeeding salts. 3. Heat Stress If the leaves closest to your light are affected and curling upward, it could be light or heat stress. Solution: Raise your light slightly or increase airflow. Check canopy temps (should be 24–28°C max). --- Less Likely but Possible: 4. Magnesium Deficiency Often seen with CalMag issues. Yellowing between leaf veins + spotting. You said you’re using CalMag, but at pH 5.6, it may not be available to the plant. --- Immediate Fix Checklist: 1. Adjust pH to 6.3–6.5 for next watering. 2. Light flush with plain pH-balanced water. 3. Resume feeding as per Biobizz schedule but at correct pH. 4. Ensure good airflow, no hot zones or direct fan blast on leaves.