Calcium deficiency, etc?

Hello everyone, first grow and post here with a couple issues to ask about. I have no experience and have not been great with gardening typically so any criticism is very welcomed. I am noticing these spots recently and am thinking it's cal deficient but would love confirmation on it from some OG's.
Outdoor plants that have been coming in at night to keep them vegging and cold temps.
I Had until recently had very high runoff ec of like 4.5! and thought maybe that had contributed to this but the plants have always looked decent maybe not growing as fast as I would like but otherwise seem to be thriving. Having some pest issue that I suspect to be stinkbugs as I hear they dig em?
I have been wrapping my smart pots with light brown paper because they are black pots and from what I understand you don't want them in direct sun but would like clarification on that also.

Also in the last few days The leaf tips of some of.
my fan leaves are dry and falling off but I am hoping that is because of the fan I keep on them at night is drying them out/resting on the edge if the pots. I am planning on topping these soon but don't want to with these issues. The EC is corrected now btw, any tips would be much appreciated, thanks in advance everyone!


7 weeks in veg
FF liquid plant food for now
Tbd hybrid strain clones
Soil/coco blend
5 gals smart pots currently 25 to finish

Anyone?

I don’t have time to read all thru, but taking a quick look, I’d say it was due to water on yr leaves. It is like a magnifying glass over yr leaf. keep yr water source close to the dirt

Also are you ph’ing? I use the liquid ph test kit. It’s more stable of a reading in my opinion. A good 6.2-6.5ph would be good since you have a coco/soil medium
Also, ph your runoff. You want it coming out same as it goes in, ideally

GreenThumbsMcgee said:

Also are you ph’ing? I use the liquid ph test kit. It’s more stable of a reading in my opinion. A good 6.2-6.5ph would be good since you have a coco/soil medium
Also, ph your runoff. You want it coming out same as it goes in, ideally

Click to expand...

Thanks homie! The ph/ppm issues have been almost sorted I believe, really appreciate you checking them out

ChuckFarley said:

Thanks homie! The ph/ppm issues have been almost sorted I believe, really appreciate you checking them out

Click to expand...

A runoff EC of 4.5? I have trouble believing that. Are you sure your meter is properly calibrated? That would cook a plant.