What is this?

I've not had any deficiencys in last 3 runs and I do the same all the time just wondering what I got going on here. Dwc, gh trio nutes. Strain is gg4. Tap water is 50-60ppm.

Looks like calcium deficiency to me.

Ya could be calcium, could also be nothing. Looks isolated to that one leaf?

Watters said:

Ya could be calcium, could also be nothing. Looks isolated to that one leaf?

Click to expand...

No it's on a few of them