My leaves are turning yellow, please help??

looks like you asked this question 4 times now. 1)growdiaries.com/grow-questions/68065-my-leaves-are-turning-yellow-please-help 2)growdiaries.com/grow-questions/68063-my-leaves-are-turning-yellow-please-help 3)growdiaries.com/grow-questions/68067-my-leaves-are-turning-yellow-please-help 4)growdiaries.com/grow-questions/68069-my-leaves-are-turning-yellow-please-help From what I can tell, its from this diary growdiaries.com/diaries/189737-seedsman-bubba-kush-grow-journal-by-kabakcilar Growdiaries does not link the diary to the questions anymore as they suck. https://www.biobizz.com/downloads/nutrient-schedule/ This is the nutrient schedule for you line of products. It looks like your feeding them the suggested products but not the suggested amounts.. Its 1ML/L for BioGrow and 2Ml/L for BioHeaven with all mix that is like soil. Your giving them 4ml/l for each in the diary, so 4x and 2x the recommended amounts I would suggest getting a EC pen to check you feeds especially if your not getting any runoff in the irrigations. I don't like getting runoff with soil grows but I use amendments so its a bit different. EC is how strong the feed is and its best to keep it under or aorund 1.2EC - 1.6EC for veg. Some growers can do the higher side of the scale or even more but they normally get a lot of runoff with the plants, with the runoff it helps so the medium does not build up fertilizer in the soil. With soil feeding less is more and sometimes it need a purge or flush to help lower the concentration to prevent issues. This is likely the issue of it, to much feed and burning the plants. It could also be the roots are staying wet to long and not berating right then rot is setting it. I'd suggest a good rinse/flush of just ph'd water, followed up by a standard feed that's not overly concentrated. It also looks time to flip them to flower. As for CaMg. A bit will not hurt it, but again got to be mindful of its EC, and the feeding guide suggests it only once a week unless your using RO or very soft water. Most soils have a lot of Calcium in it, if it is truly soil. Good Luck!