Deficiency help

Nitrogen would be yellowing. Pretty sure it is calmag

Way too much nitrogen and not enough calcium.

Hey growmie, not nitrogen, this looks like early CalMag deficiency for sure. Rusty patches on older leaves are classic signs. Couple things: 💧 You are adding CaMg, but 1.3ml/L might be a bit light, especially with RO or soft water. 📉 Check runoff pH (target 6.2–6.5). If it’s off, calcium uptake can get blocked even if it's in the mix. Keep an eye on salt buildup,if you’re not flushing now and then, that can cause lockout too. Damage won’t reverse but should stop spreading once corrected. Rest of the plant looks solid.

You're right to suspect nitrogen – the uniform yellowing of lower leaves and overall pale tone fits well. CalMag issues usually start as spotting or rust marks, especially on newer growth, which isn’t the case here. At this stage, a light boost in nitrogen should help, especially since you're still early in veg. Check pH to rule out lockout, and you should see recovery within a few days.

I’d say… check your ph and would say a little to Mutch of N If you check your EC what is it at ? I’d be temped to push back a little on the EC / lower strength of feed Good luck 🤩

calcium deficiency. possibly caused by ph issue. also could be when you water and the plant gets wet or in the soil. or it could be chlorine/chloramine issue. I have to boil my water before use because of chloramine. you can check your local water and whats in it online to get a better idea. The rest of the plant looks healthy

Looks like 100% over watering let the soil get really dry b4 you water each time the pot will be super light when you pick the plant up