Nutrient Deficiency?

Leaves are looking a little “saggy” i water every other day with reg tap water. Half gallon each. Plants are in coco/peralite. 12/12 light. Should I run some distilled water through there? Any major concern here? Ive been told its too early for CalMag or anything like that. Any help/thoughts are appreciated.

it's not too early for cal mag but that isn't your problem anyway. has it been cold in your tent at night? and are u making sure u don't leave her sitting in her own runoff water?

also what is your runoff PH and TDS/EC?

I actually havent found a good way to test the PH in coco coir. Any suggestions? The air temp has dropped actually so that could be a factor.The plants are lifted above ground so the runoff just drains into catch trays then they’re emptied. Sorry not familiar with TDS/EC. First timer over here.

PH the water u pour in, then PH the water that runs out as u water it.

total dissolved solids, EC, PPM, very important to keep an eye on

Ahh gotcha. I’ll try that out today. Should I be testing the EC/PPM? Also the leaves seem a bit dry. Not super crispy but if you look at the pick you can see them curling a bit.

you want it grow area to be 55%+ humidity. if it's ppm is off then the roots aren't able to properly pull in water and nutrients.