First Grow // Organic Soil

Nothing serious surely a moisture too much
Good growth

This is a phosphorus deficiency, see how the leaves began to curl downwards and turn yellow. Notice that the stems or veins never turned red or purple on this leaf, except for some parts that were actually affected by the phosphorus deficiency. This isn't unusual in flower just means the plant needs more phosphorus. Hopefully, I answered your question and remember Happy Growing and Free your mind one puff at a time.