Shaggy's 5 Space Cookies Grow

Hey there so extreme cold will slow your plant growth ans can eventually kill the plant especially at freezing temps. I see the plants are partly outdoors partying with the tomatoes which lucky are much like cannabis, at this stage if you can keep temps between 70-85 with good humidity thats best, but even if you went down into the higher 60s that's ok too, with slightly cooler night temps. If your substrate can stay above 60 it'll discourage mold and other things. The plants and tomatoes are looking good. :) oh also a lot of your plants leaves look like they're "praying" which is a good thing. I think things are coming along great.

Hi Shaggy. Looks like textbook calcium deficiency. Magnesium looks interveinal chlososis, calcium shows up as brown spots on leaves affected. The requirement and deficieny signs with calcium can be weeks apart meaning your middle leaves needed calcium 2 weeks ago and because it’s not a mobile nutrient as the leaves grow your requirements of calcium or not met hence the spots. Now that you’re adding “cal mag” you shouldn’t have anymore issues. (Calcium is required at 6% magnesium 2% each feed) hope that clears it up for you ;)