Sick plants Week 4 - Mimosa Lemon Auto & Cheese Auto

Hello community! Have done 3 grows in the past, this is my first serious try, still got a lot to learn though

Seeds - Week 4, LST'd about 10 days ago



Gear

SilverBox Evolution – 90x50x160 https://www.amazon.co.uk/House-Culture-SilverBox-Evolution-90x50x160/dp/B075S7MTCL
LED 300W, placed it in about 10 days ago, had some cheap LEDs before, let's say 150W https://marshydro.eu/collections/ts-series/products/tsl-2000
2 small fans placed about 40cm above the plants, had them lower, think i got windburn
humidifier, keeping humidity at around 55%, if lower i get above 30 degrees Celcius in the room
Biobizz light mix, fed them initialy root juice and then 1ml/lt Biobizz Grow 3 out of 4 times I watered, rest is plain tap water

I am attaching photos of them yesteday, they were bone dry, I should have watered earlier. I think I got calcium deficiency on the smaller one, thats the Mimosa, the other im not sure what the problem is. Plants ar abour 35cm tall.

Problems appeared about 5 days ago.

The photos attached are taken about 16 hours ago and moments ago, after I took the photos yesterday I removed the most affected leaves, I was told that's they way it should be done, is that correct? Last feeding I gave 2ml/lt Biobizz Grow.

Also am I overwatering my plants? I water 1.5 lt every 2 days or so, I let them dry pretty well, they are in 11lt fabric pots.

I would very much appreciate your help into getting my ladies back in shape.

Thanks a lot! Smoke on!

Overall I think they just need some food. Got a pretty uniform light green color going on...leaf tips are not curling up or down...I am not familiar with biobizz grow, but 1ml per litre may need to be checked on to bring that nitrogen up.

over water leaves curl up and stay green, dry dirt death on leaves, off color food, i am on 77 days and my auto flower not even close, 2x 600w 1 x 300w i may have another week or two on mine, not happy, next time i going Godfather OG if i need to wait for growth, auto sux
i made mistake and raised lights to high (20 inch)and plant stretched so i have bear spot, my first auto but not newbee grower

Prob not watering enough, getting too dry. Good luck!