What’s up with my basil?

Hi guys,
Could you please help me to identify what’s up with my basil? It has yellow colors, yellow dots and strange shape of leaves.

I searched some basil deficiencies pictures on internet and found out that could be multiple of them, like iron and manganese. I added more ‘micro’ of my 3 component solution + calmag (EC went from 1.9 to 2.3) , but it didn’t help after 3 days. pH is 6, aeration is ok, lights are close.

Could it be that nutritient degraded over year? For example my calmag now has two layers and looks like dirt when I add it to water.

Thanks for any tip!