I Should Know What This Is But I Don't. Help, please?

I had taken a break from growing for a couple of years, and did what I always do - start my seedlings in an Aerogarden till they develop a good root system, and then plant them in soil. This grow, my lower leaves are looking really bad. New growth is fine. Anyone know what might be causing this and how to fix it? The PH is 6.1 last time I checked.

TIA

Might be magnesium deficiency

Thanks, LL. Is there anything else it could be? I've looked at pictures of mag deficiency and not sure that's it.

Looks like both cal & mag def.

New growth already starting to show cal def.

Check pH,roots & the total nutrient ratio.

extreme phosphorus deficiency, or PH issue.

Thanks for the replies - I'll check all of that.

Looks like you have ph swings. I would transplant to soil now. Should fix the problem.

Use some calmag

I can't tell you how much I appreciate the feedback. Taking a break for a couple of years seems to have turned my brain to mush when it comes to remembering how to do this. It'll come back to me (I hope), but I'm so grateful for the guidance. This site is the best.