Excess calcium I'm thinking and likely a bit higher soil ph. That would explain the P and calcium issues.
Depending on time of year the amount of calcium may differ in your well?
High K like I though could also decrease calcium availability.
PBP is higher in K no?
High ppm and salinity fucking up CEC on top of K
I have not fed any of the affected plants enough or at all pbp. This is a soil/ uptake issue.
And the highest ec plant is showing calcium spots first.
The lower ec plants are showing phosphorous first.
Both typical of water stress, nute imbalance or root temps.
Also some of the higher ec in the soil plants showed some nitrogen clawing as they dried out. This was before I saw spots or blotches.
And a bit of tip burn on one plant too. But had not fed bottled nutes yet.
This is happening as the soil would normally have been running low on nutes. Week 3.