beginner [A] Calcium issue

to me it looks like smth related to nitrogen. either not enough either too much this you must put in balance. Even it may be smth with calcium, it's still bcs of some nitrogen problems. If you ask me my alltime answer is that if you grow in a pot and use nutrients as per recommended dose you will hardly have deficiencies and all time toxicities. Calcium toxicity is most of the time mistaken with calcium deficiency and people keep adding CaMg. I personally have CaMg, but i rarely use it because i dont think my plants need more that whats already in the soil.