Thanks for this brother. I think I had the same issue here but not a major cal def..I also think I locked stuff out as my root zone was too cold (i.e. having the passive intake with freezing air coming in). I managed to get it back under control and I think it was by raising my root temps. I was almost going to buy some calmag.2-Scoops wrote: ↑Fri Jan 22, 2021 6:01 pmTbh those brown looking shitty bits on leafage in last pictures is prolly calcium deficiency which tends to happen most around 3,4 and 5 weeks into 12/12. I think its caused when plants are stretching like mad first 3 to 4 weeks of 12/12 and when they are at their hungriest needing lots of calcium to stretch and grow like good ens, but peep's don`t seem to up ferts at this time for 4 or 5 weeks and then drop it back down .
But yes calcium def i found is shit hard to get right once it goes tits up, it just gets worse and worse and come chop plants usually look like shit. You`ll still get a harvest and decent smoke is what I've found in times gone by when ive had it myself, but it does effect yield a wee bit obviously. Don`t sweat about it too much though and if your doing ph`ing thing in dirt then maybe look at setting ph for fastist uptake of calcium, i know plenty don't ph soil grows. Just google ph charts for weed growing, theirs loads in google pics @grownnotflown420 .
Im in soil too and I've stuck to a ph of 6.2 throughout and calibrated once. Using only biobizz grow and bloom with lightmix and a bit of allmix i had left over. The essentials ph meter is always bang on and only out usually by about .1
Always learning to better next time.