Mimosa x orange punch 3 gal pot

I'm gonna add another so yo u can see sorry didn't k ow how to see the comments

Hello grower you PH is wrong make it 6.5-7.0 Also you can cut down the feed you getting nuts burn make the EC 1.7 and also lower the Humidity to 40-55 % 👊

The tips curling up and browning look more like an overfeed to me then a deficiency. I don't see signs of Ca deficiency, yellow and brown spots scattered on the leaves. 6.7 is a bit high but still within rage of normal I will flower at 6.8 sometimes. I would not go about altering the PH unless your medium is suggesting otherwise. Its starting to enter end of life and some leave fade should be expected. Good Luck!

Double check your runoff ph & add a little calmag to your next feed.

Hola tienes una deficiencia por tu ph alto. Baja tu ph entre 6 y 6.5. Yo no agregaría calcio. Creo que los nutrientes están disponibles pero no son absorbidos. Suerte.

If you can, add a close up image of a leaf or two so we can be more sure but I think you're right, you have a calmag deficiency. Be careful with the amount you put in brcause excess calmag causes nutrient lock out. Good Luck with ghe rest of your grow