Hmm, right off the bat it dosent seem like a mag issue to me, i wouldn’t expect such even coverage of the leaf coloration, iron came to mind as well, I believe it starts at the top newer growth, it is a possibility
Another option would be PH, being as many cycles in as you are it’s possible, plus using the well water with the higher PH it could be that the soil is slowly beginning to become too alkaline and beginning to affect nitrogen uptake
Interesting issue, I’ll keep looking at it for sure
Dr earths I’ve never used before but a lot of people do
Have you always used the dr earths in the bed?
What else do you add on a normal basis? I know you said a banana peel for the worms here and there, I just made homemade FFJ from bananas and mangos not too long ago and have been testing it outdoors and in my 4x4 bed they seem to love it at 4ml/gal
Any other additions you do on a normal basis? It’s also possible you’re running hungrier strains and the 2-2-2- isint keeping up
I run the build a soil craft blend but I also add the big 6 macro, kashi, earthworm castings (each bag was started with approx 60-70 worms split between European nightcrawlers and red wigglers, I use a bit of Alaska fish fert here and there but prefer the advanced nutrients Organics line big mikes OG tea, nice liquid neut, also organics alive FPF and the FFJ I made,
The reds prefer the top end and the nightcrawlers prefer the bottom
I did notice something similar to this in one bag I wasent getting the water as deep in, bottom of the bag was over drying, I run ecowitts in all 3 of the 30’s shallow a shallow and deep in each one, once I got the moisture levels corrected the plant recovered nicely
Do you monitor moisture levels? Oversaturarion could also affect the uptake and resemble a nitrogen deficiency
I also use the horticultural aloe, it helps assists with photosynthesis and nutrient absorption I did notice a small difference in the plants overall leaf health and appearance once I started using it I water only I never spray the plants unless I need to neem them or something but prefer clean grow spaces (yours looks great)
Is this your only tent?
Feel free to stop by the grow topic I set it up as a living soil discussion so everyone is free to throw out ideas and opinions on living soil growing! There’s not a ton of us so I wanted a nice space for us all to play

my living soil 30 gals are only on their 2nd cycle but I’ve been running organics for awhile
Mikedin’s living soil adventure and discussion topic